Generalised form of a two-digit number xy is
(a) x + y
(b) 10x + y
(c) 10x - y
(d) 10y + x

Solution:

The generalised form of the number xy is given as:

x × 10 + y × 10⁰

= 10x + y

The correct choice is 10x + y.

✦ Try This: Generalised form of a two-digit number yx is (a) x + y, (b) 10x + y, (c) 10x - y, (d) 10y + x

The generalised form of the number yx is given as:

y × 10 + x × 10⁰

= 10y + x

The correct choice is 10y + x i.e. (d)

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

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NCERT Exemplar Class 8 Maths Chapter 13 Problem 2

Generalised form of a two-digit number xy is (a) x + y, (b) 10x + y, (c) 10x - y, (d) 10y + x

Summary:

Generalised form of a two-digit number xy is 10x + y.

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☛ Related Questions:

• The usual form of 1000a + 10b + c is (a) abc, (b) abco, (c) aobc, (d) aboc
• Let abc be a three-digit number. Then abc - cba is not divisible by (a) 9, (b) 11, (c) 18, (d) 33
• The sum of all the numbers formed by the digits x, y and z of the number xyz is divisible by (a) 11, . . . .