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Numbers

6.  How many numbers less than 1000 are multiples of both 10 and 13 ?
A. 9B. 8
C. 6D. 7

7.  A Classroom has equal number of boys and girls. Eight girls left to play kho-kho, leaving twice as many boys as girls in the classroom. What was the total number of girls and boys present initially?
A. 16B. 24
C. 38D. 32

8.  If 'a' is natural number. then the largest number dividing (a3 - a) is ?
A. 5B. 4
C. 8D. 6

9.  944 - 307 + 119 = ? + (16)2 ?
A. 508B. 500
C. 408D. 502

10.  879 X 439 + 879 X 321 = ?
A. 668040B. 669040
C. 667030D. 666040


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