Question
Which of the following numbers is divisible by
22?Solution
A number is divisible by 22 if it is divisible by both 2 and 11. Divisibility by 2: A number is divisible by 2 if its last digit is even. Divisibility by 11: A number is divisible by 11 if the alternating sum and difference of its digits is divisible by 11. According to the option-2 Divisible by 2 (last digit 2 is even). Divisible by 11 S=8-9+3-0+0-2 S=(8+3+0)-(9+0+2) S=11-11 = 0 (alternating sum: 0). Divisible by 22.
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