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

You are not logged in. #176 20090105 02:09:28
Re: *** ProblemsAnswer to #71: Character is who you are when no one is looking. #177 20090105 02:49:28#178 20090105 15:57:07
Re: *** ProblemsAnswer to #67: Character is who you are when no one is looking. #179 20090108 19:09:22
Re: *** Problems#72. An aeroplane left 30 minutes later than its scheduled time, and in order to reach its destination 1,500 kilometers away in time, it has to increase its speed by 250 kilometers per hour from its usual speed. Determine its usual speed. Character is who you are when no one is looking. #180 20090109 01:00:40#181 20090109 01:09:55
Re: *** ProblemsAnswer to #72 : Character is who you are when no one is looking. #182 20090109 14:02:54#183 20090109 15:30:55
Re: *** ProblemsAnswers to #57, #58, #59, #60, and #64: Character is who you are when no one is looking. #184 20090110 00:54:33
Re: *** Problems#73. If (a + b + c) = 0, then what is a³ + b³ + c³ equal to? Character is who you are when no one is looking. #185 20090110 08:32:39
Re: *** Problems
Last edited by JaneFairfax (20090110 08:39:13) #186 20090110 08:38:00
Re: *** Problems#74 #187 20090110 23:32:03
Re: *** ProblemsAnswer to #73. Hence, the answer is 3abc. Answer to #74: Haven't you learned finding Least Common Multiples and Greatest Common Divisors of fractions? LCM of GCD of Character is who you are when no one is looking. #188 20090111 00:58:22
Re: *** ProblemsI have never heard of such a thing before. #189 20090111 01:11:31
Re: *** ProblemsAnswer to #174: Character is who you are when no one is looking. #190 20090111 01:55:53
Re: *** Problems
Oh I see! Now I understand the logic behind the definition. Thank! #191 20090111 17:20:38
Re: *** Problems#75. Find the Greatest Common Divisor of #76. Find the Greatest Common Divisor of 108, 288, and 360. #77. Find the Least Common Multiple of . Character is who you are when no one is looking. #192 20090111 17:36:35
Re: *** Problems#78. Find the Greatest Common Divisor and the Least Common Multiple of 0.63, 1.05, and 2.10. Character is who you are when no one is looking. #193 20090112 12:46:53#194 20090112 19:09:59
Re: *** ProblemsAnswers to #75, #77, #79, and #80: Character is who you are when no one is looking. #195 20090114 00:28:04
Re: *** Problems#81. An officer's pension on retirement of services is equal to half the average monthly salary during the last 36 months of his service. His salary from Jan 01, 1954 was $380 per month with increments of $40 as from Oct 01, 1954, Oct 01, 1955 and Oct 01, 1956. If her retired on Jan 01, 1957, how much pension does he draw? Character is who you are when no one is looking. #196 20090114 00:39:55
Re: *** Problems#82. Eleven persons contributed a certain sum. Nine of them gave $2 each and the other two gave $2 and $2.50 more respectively than the average of all the eleven persons. Find out the sum contributed by the two persons who contributed more. Character is who you are when no one is looking. #197 20090114 00:45:14
Re: *** Problems#86. Two persons ride towards each other 55 kilometers apart, one riding at 12 kilometers per hour and the other at 10 kilometers per hour. When would they first be 11 kilometers apart? If they continue riding, after how much time would they again be 11 kilometers apart? Character is who you are when no one is looking. #198 20090114 00:53:58
Re: *** Problems#88. A alone can reap a certain field in 15 days and B alone in 12 days. If A begins alone, and after a certain interval, B joins him, the field is reaped in 7½ days. How long did A and B work together? Character is who you are when no one is looking. #199 20090114 11:01:05#200 20090114 11:53:37
Re: *** ProblemsI think it's safe to assume that PQR = ABC. Why did the vector cross the road? It wanted to be normal. 