Question

there was a number of 18 digits if we replace its first digit to last the new 18 digit number will be formed that half of the first 18 digit number. find that 18 digit number? with solution​

Answer 1

Answer:

Let the tens place digit be x.

The units place digit is 3.

Step-by-step explanation:

∴ Number = (10x + 3) ... (1)

Given:

7( x + 3) = (10 x + 3)

7 x + 21 = 10 x + 3

∴ 10 x - 7x = 21 - 3

⇒ 3 x = 18

or x = 6

Using x = 6 in equation (1):

The number is 63.

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