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Euclid Sample Paper 2 · Q15

Paper 2Logic & proofNumber & counting

For each n=1,2,…,100n=1,2,\ldots,100, the statement SnS_n is:

At least nn of the integers mm with 1≤m≤1001\leq m\leq100 have m2−1m^2-1 divisible by 2424.

Exactly how many of the statements S1,S2,…,S100S_1,S_2,\ldots,S_{100} are true?

A2626
B3232
C3333
D3434
E5050
F6767

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