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1 If 3x+3 + 7 = 250, the x is equal to
2
A die with faces numbered from 1 to 6 is thrown twice. The probability, that the numbers shown up differ by 2, is
3
In the sequence of numbers 5, 8, 15, 20, 29, 40, 53, one number is wrong. The wrong number is
4
1 + 2 + 3 + ??. + 49 + 50 + 49 + 48 + ??. + 3 + 2 + 1 is equal to
5
The surface area of a sphere is 64? cm2 its diameter is equal to
6
Each of the height and base radius of a cone is increased by 100%. The percentage increase in the volume of the cone is
7
A television and a refrigerator were sold for Rs. 12,000 each. If the television was sold at a loss of 20% of the cost and the refrigerator at a gain of 20% of the cost, then the entire transaction resulted in
8
A person sells a table at a profit of 10%. If he had bought the table at 5% less cost and sold for Rs. 80 more, then he would have gained 20%. The cost price of the table is
9
By selling an article at 2/3 of the marked price, there is a loss of 10%. The profit percent, when the article is sold at the marked price, is
10
A moving train, 66 metres long, overtakes another train 88 metres long, moving in the same direction in 0.168 minutes. If the second train is moving at 30 km/r, then at what speed is the first train moving ?
11
A constable is 114 metres behind a thief. The constable runs 21 metres and the thief 15 metres in a minute. In what time will the constable catch the thief ?
12
Joseph?s salary is reduced by 10%. In order to have his salary back to his original amount, it must be raised by
13
How many positive integers less than 1000 are multiples of 11 whose square roots are whole numbers ?
14
The digit in the unit?s place of the product (2137)754 is
15
The smallest square number divisible by 10, 16 and 24 is
16
If the compound interest on a sum of money for 3 years at the rate of 5% per annum is Rs. 252.20, then the simple interest on the same sum at the same rate and for the same time is
17
On a certain sum of money, the compound interest for 2 years is Rs. 282.15 and the simple interest for the same period of time is Rs. 270. The rate of interest per annum is