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Maths Puzzle
The numbers from 1 to m are written one after another as follows 1234567…….m. The resulting number is divisible by 3 if m is of the form (n is a natural number):
I. 3n
II. 3n – 1
III. 3n – 2
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Others Other Question
when p is divided by q..
what is the max possible
remainder?
The arithmetic sequence a, a+d, a+2d, a+3d, . . ., a+(n−1)d has the following properties:
• When the first, third, and fifth, and so on terms are added, up to and including the last term, the sum is 320.
• When the first, fourth, seventh, and so on, terms are added, up to and including the last term, the sum is 224.
What is the sum of the whole sequence?
(A) 656
(B) 640
(C) 608
(D) 704
(E) 672