Given: Numbers 1474, 4124, 4131, 1254
Formula Used: Divisibility rule of 9: A number is divisible by 9 if the sum of its digits is divisible by 9.
Solution:
Sum of digits of (a) 1474 = 1 + 4 + 7 + 4 = 16 (Not divisible by 9)
Sum of digits of (b) 4124 = 4 + 1 + 2 + 4 = 11 (Not divisible by 9)
Sum of digits of (c) 4131 = 4 + 1 + 3 + 1 = 9 (Divisible by 9)
Sum of digits of (d) 1254 = 1 + 2 + 5 + 4 = 12 ( Not Divisible by 9)
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