Sainik School Entrance Exam 2020 Solved Paper

Question : 10 of 150

Marks: +1, -0

Find the value of

Z

for which the number

471 Z 8

is divisible by 9 .

Solution:

471{\Z} 8

is divisible by 9
So, the sum of its digits is divisible by 9

∴ (4+7+1+Z+8)

is divisible by 9

∴ (20+Z)

is divisible by 9,

∴ Z=7

∴ (20+7)=27

is divisible by 9
Hence, the value of

{\Z}=7

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