If a-5 and b-3 then find the value of 2a-5bA- 155B- 157- 150D- 158

The correct option is B 157 Given a = 5 and b =3 then 2^a+5^b = 2^5+5^3 = (2 × 2 × 2 × 2 × 2) + (5 × 5 × 5) = 32 + 125 = 157 ...

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Standard VII

Mathematics

Exponents

If a=5 and b=...

Question

If a = 5 and b =3 then find the value of $2^{a} + 5^{b}$

$155$

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$157$

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$150$

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$158$

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Solution

The correct option is B
$157$

Given

a = 5 and b =3

then $2^{a} + 5^{b}$ = $2^{5} + 5^{3}$

= $(2 \times 2 \times 2 \times 2 \times 2) + (5 \times 5 \times 5)$

= $32 + 125$

= $157$

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If a = 5 and b =3 then find the value of 2a+5b

The correct option is B 157 Given a = 5 and b =3 then 2a+5b = 25+53 = (2 × 2 × 2 × 2 × 2)+(5 × 5 × 5) = 32+125 = 157

If a = 5 and b =3 then find the value of $2^{a} + 5^{b}$

The correct option is B
$157$

Given

a = 5 and b =3

then $2^{a} + 5^{b}$ = $2^{5} + 5^{3}$

= $(2 \times 2 \times 2 \times 2 \times 2) + (5 \times 5 \times 5)$

= $32 + 125$

= $157$