If
B 1
× B
4 9B
then B = _______.Fill in the blank to make the statement true

Solution:

1 × B = B implies

B can be 1, 2, 3, 4, 5, 6, 7, 8, 9

But,

B × B = 49

Therefore

7 × 7 = 49

B = 7

71 × 7 = 497

✦ Try This: If

B 5

× B

27B

then B = _______.

B × 5 = Number ending with digit B

Implies

B = 5 because B × 5 = Number ending with digit B

Therefore

B5 × 5 = 55 × 5 = 275

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 16

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NCERT Exemplar Class 8 Maths Chapter 13 Problem 26

If B 1 × B = 4 9B, then B = _______.Fill in the blank to make the statement true

Summary:

If B 1 × B = 4 9B, then B = 7

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☛ Related Questions:

• 1 x 35 is divisible by 9 if x = _______. Fill in the blank to make the statement true
• A four-digit number abcd is divisible by 11, if d + b = _______ or _____. Fill in the blank to make . . . .
• A number is divisible by 11 if the differences between the sum of digits at its odd places and that . . . .