M4maths Maths Puzzle Numerical Ability

The number of prime numbers "P" such that 1999! +1 < P < 1999! +1999 ?No

1) 1
2) 0
3) 1999
4) 2000

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M4maths Other Question

A pencil cost rs. 0.25 ,a pen cost rs. 10 and a book cost rs. 25 .How many each,one should buy so that the total no. of article is 100 and the total amount is rs. 1000? A man travels 10 meter towards east from point A to point B, then he turns left for 10 m from point B to point C. From point C it starts to move in a semicircle CXD. CD is perpendicular to BC and D is towards east relative to C. If his distance at D from initial point A is 50 m, then radius of semicircle path will be