If 324×150=54, 251×402=48, 523×246=120, then 651×345 is equal to
A
120
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B
85
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C
144
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D
60
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Solution
The correct option is B 144 I. 324×150=54 ⇒(3+2+4)×(1+5+0)=9×6=54 II. 251×402=48 ⇒(2+5+1)×(4+0+2)=8×6=48 III. 523×246=120 ⇒(5+2+3)×(2+4+6)=10×12=120 Similarly, 651×345=144 ⇒(6+5+1)×(3+4+5)=12×12=144