1.

A certain number when sucessively divided by 2, 3 and 5 leave remaindery 1, 2 and 3 respectively. Then what is the complete remainder? a) 20 b) 21 c) 22 d) 23

Answer»

Correct option: (d) 23

Explanation:

d1 = 2 d2 = 3 d3= 5 

r1 = 1 r2 = 2 r3= 3

Complete remainder = d1 d2 r3 + d1 r2 + r1 

= 2 x 3 x 3 + 2 x 2 + 1 

= 18 + 4 + 1 = 23



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