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Number System (Divisibility rule - 4) (in Hindi)
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Number System (Divisibility rule - 4) (in Hindi)

Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. More than 20000 students selected.

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Shikhar Makwana
3 months ago
thanks for your appreciation
St
in cat 1998 quest. why two digit no. is 90 and not 91?
sir, can u plz explain thi formula ...a+(n-1)d
in the first question,last 2 digit must be divisible by 4.So only 1,3,5,7,9 possible.Again After being divided by 4 the last digit must not be odd to be divisible by 2 again.Placing 1,5,9 leaves odd so only 3 or 7 possible