If the positions corresponding to the multiples of 5 in English alphabet are replaced by symbols and that of multiples of 7 by digits, how many letters will be left?

If the positions corresponding to the multiples of 5 in English alphabet are replaced by symbols and that of multiples of 7 by digits, how many letters will be left? Correct Answer 18

Multiples of 5: 5, 10, 15, 20 and 25

Multiples of 7: 7, 14, 21

So, 5th, 10th, 15th, 20th and 25th letters in alphabet are replaced by symbols

7th, 14th and 21st letters will be replaced by digits

English alphabet series:

[ alt="SBI clerk 1" src="//storage.googleapis.com/tb-img/production/18/01/SBI%20clerk_1.PNG" style="height:103px; width:609px">

After replacing, the new series will be:

[ alt="SBI clerk 2" src="//storage.googleapis.com/tb-img/production/18/01/SBI%20clerk_2.PNG" style="height:105px; width:605px">

Therefore, no. of letters left = 18

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