(104×96) = ? (a) 9894 (b) 9984 (c) 9684 (d) 9884
ANSWER: (b) 9984 104×96=(100+4)(100−4) =1002−42=10000−16=9984
Question 21 The reciprocal of −38×(−713) is (a) 10421 (b) −10421 (c) 21104 (d) −21104