General Mathematics

Question: What is the number of prime numbers less than 70 ?
A
17

B
18

C
19

D
20

Note: Not available
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Question: The sum of all prime numbers between 60 and 90 is :
A
373

B
460

C
523

D
610

Note: Not available
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Question: Which one of following is prime number ?
A
161

B
221

C
373

D
437

Note: Not available
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Question: Which one of the following nmbers is not a square of any natural number ?
A
17956

B
18225

C
53361

D
63592

Note: Not available
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Question: If`a/a=4/3`,then `(3a+2b)/(3a-2b)`=?
A
-1

B
3

C
5

D
6

Note: Not available
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Question: If`x/y=3/5`then`(6/7-(2y-x)/(2y+x))`
A
`9/35`

B
`11/28`

C
`29/91`

D
`18/13`

Note: Not available
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Question: If `a^3`b=abc=180 and a,b,c are positive integers,than the value of c is :
A
110

B
25

C
15

D
None

Note: Not available
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Question: `(1-(1/3))(1-(1/4))(1-(1/5))...(1-(1/n))`is equal to :
A
`1/n`

B
`2/n`

C
`2/(n(n+1))`

D
`(2(n-1))/n`

Note: Not available
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Question: When simplified,the product `(2-1/3)(2-3/3)(2-5/7)...(2-997/999)`. is equal to :
A
`5/999`

B
`1001/999`

C
`1001/3`

D
None of these

Note: Not available
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Question: `(256)^18 xx (256)^07` is equal to :
A
4

B
6

C
8

D
64

Note: Not available
1. Report

Question: What is the number of prime numbers less than 70 ?