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Question

Mathematics Question on Number Systems

What is the third term in a sequence of numbers that leave remainders of 1, 2 and 3 when divided by 2, 3 and 4 respectively?

A

11

B

17

C

19

D

35

Answer

35

Explanation

Solution

L.C.M. (2,3,4) = 12
Number of the form that leave remainders of 1, 2 and 3 when divided by 2, 3 and 4 respectively =12x112x−1
Therefore,(21)=(32)=(43)=1(2−1)=(3−2)=(4−3)=1, where xx is a natural number
Thus, the third number =12(3)1=3512(3)−1=35
The correct answer is (D): 35