Correct Answer - Option 1 : 20

**Given:**

the 7-digit number 2y6810x is divisible by 88.

**Concept used:**

Divisibility

**Calculation:**

If a number is divisible by 88 means it is divisibly by 11 and 8

⇒ 11 × 8 = 88

To check the divisibility of 8 check the last three digits

In 10x let the x be 4

104 is completely divisible by 8

∴ x = 4

Divisibility of 11

⇒ (sum of digits at odd places - Sum of digits at even places) = 0 or 11

⇒ (4 + 1 + 6 + 2) - (y + 8) = 0

⇒ 13 - y - 8 = 0

∴ y = 5

Product of x and y

⇒ 4 × 5 = 20