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TIFR CSE 2025 | Part A | Question: 10

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2 Answers

3 3 votes

ANS = OPTION C

Answer is 40.. since the numbers in clock hand repeat after 60 then we'll just take the modulo 60 of 10^1024

so 10^1024 % 60 = 100^512 % 60 = 100 % 60 = 40 

to solve modulo of large numbers .. we do it by repeated squaring method ( find reference link below)

https://www.youtube.com/watch?v=EHUgNLN8F1Y 

0 0 votes
AS AFTER EVERY 6 MIN CLOCK WILL BE AT 00 AGIAN SO

1024/6=170.667

AS 170 WILL 1 OVER BECZ 6*10 =60 MIN

0.667*6=4.002 SO APPEOX 4* 10 = 40 MIN ANSWER SO

C IS ANSWER
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