Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 Re: Ganesh's Puzzles » Oral puzzles » Today 15:34:16


#2168. Find the equation of the straight line passing through the point (9,-1) and having its x-intercept thrice as its y-intercept.

#2 Re: Ganesh's Puzzles » 10 second questions » Today 15:29:28


#5328. If the Standard Deviation of a set of data is 1.6, find the variance.

#3 Re: Ganesh's Puzzles » Doc, Doc! » Today 15:18:06

Hi bobbym,

The Answer #360 is perfect. Excellent!

#361. Name the medical term : A small, hard, pathological concretion, composed chiefly of cholesterol, calcium salts, and bile pigments, formed in the gallbladder or in a bile duct.

#4 Re: Exercises » Compute the solution: » Today 15:07:05

Hi bobbym,

The solutions 71 and 72 are correct. Excellent!

73. The mean and standard deviation of 20 items are found to be 10 and 2 respectively. At the time of checking, it was found that an item 12 was wrongly entered as 8. Calculate the correct mean and standard deviation.

74. A box contains 10 white, 6 red, and 10 black balls. A ball is drawn at random. Find the probability that the ball drawn is white or red.

#5 Re: Ganesh's Puzzles » English language puzzles » Today 00:51:42

Hi bobbym,

#1553. What does the noun quintessence mean?

#1554. What qors the noun quip mean?

#6 Re: Ganesh's Puzzles » General Quiz » Today 00:36:50

Hi bobbym,

The Answer #5355 is correct. Excellent!

#5357. Name the English polymath and engineer who made important contributions to automotive engineering, aerodynamics and co-invented the topic of operations research (23 October 1868 – 8 March 1946). He was also a pioneer British motor car builder, a hobby which resulted in his developing a successful car company, and is considered one of the "big three" English car engineers, the others being Harry Ricardo and Henry Royce.

#5358. Alessandro Giuseppe Antonio Anastasio Volta (February 18, 1745 – March 5, 1827) was an Italian physicist known for invention of the electric cell and Discovery of methane. Name the medal he was awarded in 1794.

#7 Re: Ganesh's Puzzles » Doc, Doc! » Yesterday 23:59:45

Hi bobbym,

#360. Name the medical term : Abnormally intense thirst, leading to the drinking of large quantities of fluid.

#8 Re: Ganesh's Puzzles » 10 second questions » Yesterday 23:44:20

Hi bobbym,

The solution #5326 is correct. Excellent!

#5327. The surface areas of two spheres are in the ratio 9:25. Find the ratio of their volumes.

#9 Re: Ganesh's Puzzles » Oral puzzles » Yesterday 23:38:51

Hi bobbym,

The solution #2166 is correct. Good work!

#2167. Find the value of


#10 Re: Exercises » Compute the solution: » Yesterday 18:06:38

Hi bobbym,

The solutions 69 and 70 are correct. Spectacular!

71. Find two consecutive odd natural numbers, the sum of whose squares is 202.

72. The ratio of volumes of two cones is 4:5 and the ratio of the radii of their bases is 2:3. Find the ratio of their vertical heights.

#11 Re: Ganesh's Puzzles » Doc, Doc! » Yesterday 17:51:26

Hi Chris2 and bobbym,


is perfect! Remarkable!

#359. Name the medical term : (Pathology) Tuberculosis of the skin, especially of the face, with the formation of raised translucent nodules.

#12 Re: Ganesh's Puzzles » Oral puzzles » Yesterday 17:36:40

Hi bobbym.

The solution #2165 is correct. Good work!

#2166. The length of the side of a square is 4 √2 centimeters. Find the length of the diagonal of the square.

#13 Re: Ganesh's Puzzles » 10 second questions » Yesterday 17:29:24

Hi bobbym,

The solutions #5324 and #5325 are perfect. Neat job!

#5326. If the lines ax - 5y = 5 and 2x + y = 1 are perpendicular, find the value of 'a'.

#14 Re: Exercises » Compute the solution: » Yesterday 01:15:47

Hi bobbym,

The solutions 67 and 68 are correct. Stupendous!

69. Using the  concept of slope, show shat the points (-2,-1), (4,0), (3,3), and (-3,2) taken in order form a parallelogram.

70. Find the equation of the straight lines passing through the point (2,2) and the sum of the intercepts is 9. (Two solutions).

#15 Re: Ganesh's Puzzles » Doc, Doc! » Yesterday 00:37:41

Hi bobbym,

#358. Name the medical term : Inflammation of the navel, espeically in newborn infants.

#16 Re: Ganesh's Puzzles » English language puzzles » 2014-12-17 23:21:28

Hi bobbym,

The Answer #1550 is correct. Awesome!

#1551. What does the noun quidnunc mean?

#1552. What does the noun quinsy meam?

#17 Re: Ganesh's Puzzles » General Quiz » 2014-12-17 23:03:30

Hi bobbym,

The Answer

is perfect. Marvelous!

#5355. Name the inventor (3 April  1693– 24 March 1776) who was a self-educated English carpenter and clockmaker. He invented the marine chronometer, a long-sought after device for solving the problem of establishing the East-West position or longitude of a ship at sea, thus revolutionising and extending the possibility of safe long-distance sea travel in the Age of Sail.

#5356. When did Lumière brothers, Auguste Marie Louis Nicolas and Louis Jean, who were the first filmmakers in history invent the cinema? They patented the cinematograph, which in contrast to Edison's "peepshow" kinetoscope allowed simultaneous viewing by multiple parties. Their first film, Sortie de l'usine Lumière de Lyon, is considered the first true motion picture.

#18 Re: Ganesh's Puzzles » 10 second questions » 2014-12-17 17:50:16


#5325. Find the equation of the straight line passing through the origin and perpendicular to the straight line 2x+3y-7=0.

#19 Re: Exercises » Compute the solution: » 2014-12-17 17:42:09

Hi bobbym,

The solutions 65 and 66 are correct. Brilliant!

67. A car left 30 minutes later than the scheduled time. In order to reach its destination 150 kilometers away, it has to increase its speed by 25 kilometers per hour from its usual speed. Find its usual speed.

68. If

are the roots of the equation
, form an equation whose roots are

#20 Re: Ganesh's Puzzles » Oral puzzles » 2014-12-17 16:25:12

Hi bobbym,

The solution #2164 is correct. Excellent!

Regarding #2163, Formulas page .

#2165. If f(x) = x² + 5, find f(-4).

#21 Re: Ganesh's Puzzles » Doc, Doc! » 2014-12-17 16:10:47

Hi Chris2 and bobbym,

The Answer #356 is perfect. Keep it up!

#357. Name the region of the cerebral cortex, in the human or other primate brain, defined by its cytoarchitecture, or structure and organization of cells.

#22 Re: Exercises » Compute the solution: » 2014-12-17 01:52:08

Hi bobbym,

The solution 63 (both parts) are correct. Marvelous!

65. Find the sum of the series :

66. Find the values of 'a' and 'b' if the following polynomial is a perfect square.


#23 Re: Ganesh's Puzzles » English language puzzles » 2014-12-17 01:29:58

Hi bobbym,

Brilliant, bobbym! Both the Answers, #1547 and #1548, are correct!

#1549. What does the verb (used with object) quash mean?

#1550. What does the adjective queasy mean?

#24 Re: Ganesh's Puzzles » Doc, Doc! » 2014-12-17 01:12:07

Hi bobbym,

Excellent, bobbym!

#356. Name the medical term/disease : It is chemical pneumonitis caused by aspiration during anaesthesia, especially during pregnancy. Aspiration contents may include gastric juice, blood, bile, water or an association of them.

#25 Re: Ganesh's Puzzles » General Quiz » 2014-12-17 00:51:36

Hi bobbym,

The Answer #5352 is correct. Magnificent!

#5353. What was invented by by an Italian, Luigi De Cristoforis, in 1876? (It was developed by Enrico Bernardi at the University of Padua in 1882).

#5354. What inverntion/discovery was made in 1774 by Carl Wilhelm Scheele, who supposed it to be an oxide of a new element? In 1809, chemists suggested that the gas might be a pure element, and this was confirmed by Sir Humphry Davy in 1810.

Board footer

Powered by FluxBB