Mathematics
Which out of following are expressions with numbers only?
(i) 2y + 3
(ii) (7 × 20) − 8z
(iii) 5 × (21 − 7) + 9 × 2
(iv) 5 − 11n
(v) (5 × 4) − 45 + p
(vi) 3 × (11 + 7) − 24 ÷ 2
Algebra Basics
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Answer
An expression with numbers only does not contain any variable.
(i) 2y + 3 contains the variable y → Not an expression with numbers only.
(ii) (7 × 20) − 8z contains the variable z → Not an expression with numbers only.
(iii) 5 × (21 − 7) + 9 × 2 contains only numbers → Expression with numbers only.
(iv) 5 − 11n contains the variable n → Not an expression with numbers only.
(v) (5 × 4) − 45 + p contains the variable p → Not an expression with numbers only.
(vi) 3 × (11 + 7) − 24 ÷ 2 contains only numbers → Expression with numbers only.
Hence, (iii) and (vi) are expressions with numbers only.
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