Others Maths Puzzle

Q. Let N = 553+ 173- 723. N is divisible by

Option
A. Both 7 and 13
B. Both 3 and 13
C. Both 17 and 7
D. Both 3 and 17

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Others Other Question

Q. Little Beau Peep lost her sheep. She could not remember how many were there. She knew she would have 400 more next year, than the number of sheep she had last year. How many sheep were there?

I. The number of sheep last year was 20% more than the year before that and this simple rate of increase continues to be the same for the next 10 yr.
II. The increase is compounded annually. Q. The pendulum of a clock takes 7s to strike 4 o'clock. How much time will it take to strike 11 o'clock?

Option
A. 18 s
B. 20 s
C. 19.25 s
D. 23.33 s