Question

What is the value of X in 7x394 which is divisible by 3

Answer 1

Answer:

x can be 1, 4, 7

Step-by-step explanation:

71394 ÷ 3 = 23798

74394 ÷ 3 = 24798

77394 ÷ 3 = 25798

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Answer 2

Answer:

For a number divisible by 3, sum of digits should be divisible by 3.

So number = 7X394

Sum of digits of number = 7 + X + 3 + 9 + 4

= 23 + X

So,

23 + X = 3n (where n is some natural number)

So for different values of X we get different values of n.

So X = 1,4,7,

So numbers are

71394

74394

77394

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