2017 SSC CGL 18 Aug Shift-3 Question 10

Question 10

Devansh's birthday is on Friday 14th April. On what day of the week will be Rohan's Birthday in the same year if Rohan was born on 20th September?

Solution

According to the question, 14th April is Friday

Number of days left in April = $$30-14=16$$

Similarly, odd days from 14th April till 20th September = $$(16+31+30+31+31+20)\%7$$

= $$2+3+2+3+3+6=19$$

Now, dividing 19 by 7, remainder = 5

Thus, day on 20th September = Friday (+5) = Wednesday

=> Ans - (D)



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Comments
Aditya Kadam

2 years, 5 months ago

can anybody explain 3 step?

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