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The numbers 220242^{2024} and 520245^{2024} are expanded and their digits are written out consecutively on one page. The total number of digits written on the page is

Solution

Correct Option: 2
Solution figure for IPMAT Indore 2024 MCQ question 17 (Modern Math)

Even without knowing the values of the log, you can still solve it (take base as 10):

log22024+log52024\log 2^{2024} + \log 5^{2024}

=2024log2+2024log5= 2024 \log 2 + 2024 \log 5

=2024(log2+log5)= 2024 (\log 2 + \log 5)

=2024[log(2×5)]= 2024 [\log (2 \times 5)]

=2024(log10)= 2024 (\log 10)

=2024×1= 2024 \times 1

The number of digits is always one more than the resultant value, i.e. 20252025 digits, and no other option is close to this.


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