If a loan is taken for more than 1 year and the rate of interest in varying for different years, you can directly use the formula given here to calculate the answer.Īmount = P where R1 = rate of interest for 1st year, R2 for the second year and so on. This trick is applicable only when a number is said to be multiplied by ’11’ Here is a direct trick to solve this multiplication.ħ9*11 = 7() 9 = 7(16)9 = 869 SHORTCUT TRICK – 3 (Calculation of Multiple Interest on CI) below is the sample question.Īns: If you go by the regular formula you might not be able to do it verbally. If a+b>10 add 1 to ‘a’ and keep the rest term intact. if the total exceeds 10 add 1 the digit at 100’s place thus bringing your answer. Put the number of 79 at units and 100’s place and put the total of that number in between. If a number is given to be multiplied by 11, you can use the following method to calculate the answer.
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