4. Total number of prime numbers less than 50 are
5. Total number of prime numbers less than 100 are
6. Name the whole number which is not a natural number?
7. Smallest prime number which is also an even number is
8. The natural numbers which are not prime, are called
9. Numbers having its unit digit is any of 0,2,4,6,8; is divisible by
10. 695421 is divisible by
11. 58694 is divisible by
12. 246591 is divisible by
13. 6879376 is divisible by
14. 16789352 is divisible by
15. 7849320 is divisible by
16. 29435417 is divisible by
17. The difference between the place value and the face value of 6 in the numeral 856973 is
18. The difference between the local value and the face value of 7 in the numeral 32675149 is
19. The unit digit in the product (784*618*917*463) is
20. The difference between the place value of two sevens in the numeral 69758472 is
22. 8597 - ? = 7429 - 4358
23. 3251 + 587 + 369 - ? = 3007
24. (4300731) - ? = 2535618
26. If 1400 *x = 1050. Then, x = ?
31. The sum of first 45 natural numbers is
32. How many three digit numbers are divisible by 6 in all ?
33. which one of the following numbers is exactly divisible by 11 ?
34. ( 51 + 52 + 53 +..............+100) = ?
35. (1+2+3+............+10) = ?
36. (1+2+3+........+50) = ?
37. The sum of first five prime numbers is:
38. Ho many prime numbers are less than 50?
39. The smallest 3-digit prime number is
40. If a and b are odd numbers, then which of the following is even?
41. How many of the following numbers are divisible by 3 but not by 9 ? 2133, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276
42. The sum of all two digit numbers divisible by 5 is
43. The sum of first 45 natural numbers is
44. The sum of all even natural numbers between 1 and 31 is
45. The .................. of a digit in a numeral is its own value, at whatever place it may be.
46. All counting numbers and ........ form the set of whole numbers.
47. All counting numbers, zero and negatives of counting numbers forms the set of
48. A counting number is called a prime numbers, if it has exactly two factors, namely itself and .....?
49. A number is divisible by 10 when its unit digit is
50. A number is divisible by ........... only when its unit digit is 0 and 5.
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