If 21y5 is a multiple of 9, what is the value of digit y?

Type: MCQ • Marks: 1

A. 1

B. 2

C. 4

D. 0

Explanation

Sum of digits = 2+1+y+5 = 8+y. For 8+y to be divisible by 9, y must be 1.

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Class 7th Ganita Prakash 1

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