Challenge Question 11:
47 x 67 = 3149
We can solve this problem by using first by first and last by last sutra.
We multiply digits in tens place that add up to 10 (4×6 ) and add units place number (7) to the final answer 24+7 = 31
we simply multiply digits in units place to get the second part of the answer. 7×7 = 49
47 x 67 = 3149
94 x 67 can be solved using proportionately sutra.
94 = 47×2
67 x 47 = 3149 and we double the answer to solve 94 x 67 = 6298
<b>32 x 36 can be solved using proportionately sutra again.</b>
We double 36 to get 72.
32×72 = 2304 and we halve the result to get final answer 1152.
Regards.
