Others Maths Puzzle

What is the amount of equal instalment, if a sum of Rs.1428 due 2 years hence has to be completely repaid in 2 equal annual instalments started next year.
a)700
b)800
c)650
d)cannot be determined

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Others Other Question

How many sets of three distinct factors of the number N = 2^6 × 3^4 × 5^2 can be made such that the factors in each set has a highest common factor of 1 with respect to every other factor in that set?
a.236 b.360 c.104 d.380 e.NOT For positive integers n, denote by D(n) the number of pairs of di erent adjacent digits in the binary (base two) representation of n. For example, D(3) = D(112) = 0, D(21) = D(101012) = 4, and D(97) = D(11000012) = 2. For how many positive integers n less than or equal to 97 does D(n) = 2? (A) 16 (B) 20 (C) 26 (D) 30 (E) 35