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136.........1, 3 & 6 are first 3 triangle numbers.

**G-man**- Replies: 2

Someone planted a bomb that will surely explode. Logically people will say that the bomb has far higher chances of explosion within an hour after planting compared to an hour 10 years later (if it didn't explode before). What does maths say about this.

55..........

36

square of product of first two consecutive primes.

6 Its triangular & first composite which isn't a square.

#3 isn't a valid problem because the ratio of the final mixture Should be between 3:1 & 5:1.

Still I calculated this.

ganesh wrote:

MI # 1

Prove that the sum of n terms of

1*1! + 2*2! + 3.3! + 4*4!+.....n*(n+1)!

is (n+1)!-1.

You wrote n=1 instead of n

Let f(n)donate the series (|Last term is n*n!).

The statement is true for some p.

If I'm not wrong.

Answer to question in first post.

[hide=A's weight]85kg[hide/]

**G-man**- Replies: 1

I & my friend met an interesting man. After talking, We shared our food.

I had 6 sandwiches & my friend had 5. All of us shared equally.

After eating, the man gave us 11 gold coins.

How much should each of us get & why?

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