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Question

Mark (✓) against the correct answer
23-157=?

(a) 1121
(b)  -1121
(c) 521
(d) -521


Solution

 The correct option is (b).23157=23  127L.C.M. of 3 and 7 is 21.=14  3621 =2221=1121

Mathematics
RS Aggarwal (2017)
Standard VII

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