A) 1256
B) 1465
C) 1365
D) 1356
Correct Answer: D
Solution :
Two digit numbers of the form\[7\lambda +2\]are\[16,23...\]\[93\]. Two digit numbers of the form\[7\lambda +5\]are\[12,19...,\]\[96\] Sum of all the above numbers equals to \[\frac{12}{2}(16+93)+\frac{13}{2}(12+96)=654+702=1356.\]You need to login to perform this action.
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