Math, asked by karishmashetty22222, 3 months ago

Ifyouanscorrectiwillfollowyoupleaseansbothquestion

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Answered by priyarajpurohit2008

4

Answer:

Sorry i dont know the answer

Answered by vedvatikatara

3

Step-by-step explanation:

a)0.0000021 = 21/10000000 = 2.1 × 10-⁸

b) 0.00000000000942 = 492/100000000000000 = 4.92 × 10-¹⁶

If 18 books.... cost

18 books = Rs 1170

1 book = Rs 1170/18

25 books= Rs 65 × 25

= Rs 1625/-

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