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Question

Find the multiplicative inverse (i.e., reciprocal) of:
(i) 1325
(ii) -1712
(iii) -724
(iv) 18
(v) −16
(vi) -3-5
(vii) −1
(viii) 02
(ix) 2-5
(x) -18


Solution

(i)Reciprocal of 1325 is 2513.(ii)Reciprocal of -1712 is 12-17, that is, -1217.(iii) Reciprocal of -724 is 24-7, that is, -247.(iv)Reciprocal of 18 is 118. (v)Reciprocal of-16 is 1-16, that is, -116.(vi)Reciprocal of -3-5 is -5-3, that is, 53.(vii)Reciprocal of-1 is -1.(viii)Reciprocal of 02 does not exist as 20=.(ix)Reciprocal of 2-5 is -52.(x)Reciprocal of -18 is -8.

Mathematics
RS Aggarwal (2016)
Standard VIII

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