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Which out of the following are expressio...

Which out of the following are expressions with numbers only?
(a) `y + 3`
(b) `(7 xx 20) - 8 z `
(c) `5 (21 - 7 ) + 7xx 2 `
(d) `5 `
(e) `3 x `
(f) `5 - 5 n `
(g) `(7 xx 20 ) - (5 xx 10 ) - 45 + p`

Text Solution

Verified by Experts

(a) `y + 3` has variable `y`.
(b) `(7 xx 20) - 8 z ` has variable `z`
(c) `5 (21 - 7 ) + 7 xx 2 ` has numbers only, no variables
(d) `5 ` has numbers only, no variables
(e) `3 x ` has variable `x`
(f) `5 - 5 n ` has variable `n`
(g) `(7 xx 20 ) - (5 xx 10 ) - 45 + p` has variable `p`
Hence, (c) and (d) have expressions with numbers only.
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Knowledge Check

  • 3 xx 10 ^(5) + 4 xx 10 ^(3) + 7 xx 10^(2) + 5 is equal to

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