Q. 34.7( 104 Votes )

# Express each of the following numbers using exponential notation:

(i) 512

(ii) 343

(iii) 729

(iv) 3125

Answer :

**(i)** 512

We have,

512 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2

= 2^{9}

**(ii)** 343

We have,

343 = 7 × 7 × 7

= 7^{3}

**(iii)** 729

We have,

729 = 3 × 3 × 3 × 3 × 3 × 3

= 3^{6}

**(iv)** 3125

We have,

3125 = 5 × 5 × 5 × 5 × 5

= 5^{5}

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PREVIOUSExpress the following in exponential form:(i) 6 × 6 × 6 × 6(ii) t × t(iii) b × b × b × b(iv) 5 × 5 × 7 × 7 × 7(v) 2 × 2 × a × a(vi) a × a × c × c × c × c × dNEXTIdentify the greater number, wherever possible, in each of the following.(i) 43 or 34(ii) 53 or 35(iii) 28 or 82(iv) 1002 or 2100(v) 210 or 102

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