Find the average of the prime numbers lying between 50 and 76. Optionsa) 64b) 60c) 66d) 62 Solution As per questionThe prime numbers lying between 50 and 76 = 51 , 59 , 61 , 67 , 71 , 73The average of the prime numbers lying = 53+59+61+67+71+73/6 = 384/6 = 64 Ans: a) 64
Find the average of the prime numbers lying between 50 and 76. Read More »
The cost price of a bat is 75% of the marked price. Calculate the gain percentage after allowing a discount of 15%. Optionsa) 18.61%b) 25.6%c) 21.33%d) 13.33% Solution As per questionDiscount = 15%SP = MP -DP = SP – CP P% = Let the MP = 100CP = = 75SP = = 85P = 85
The salary of a worker is first increased by 25%, then it is decreased by 12%. The percentage change in his salary is: Optionsa) 10% decreaseb) 10% increasec) 13% increased) 13% decrease Solution As per questionLet salary = 100After increased = 125decreased in 12% = = 15125 – 15 = 110Percentage change = 110 –
Simplify : Options a) 17b) 36c) 28d) 31 Solution As per question = 12 x 3 = 36 Answer: 36
Simplify : 1020/[4/3 of (26 + 4) – 11 2/3] Read More »
How many years will it take for Rs.8,400 to amount to Rs.11,928 at a simple interest rate of 7% per annum? Optionsa) 6b) 2c) 8d) 5 Solution As per questionP = 8400R = 7%T = ?S.I = Amount – principalS.I = 11928 – 8400S.I = 3528S.I = 3528 = 588T = 3528T = 3528 =
Which of the following numbers is divisible by both 2 and 5? Optionsa) 63840b) 20792c) 37915d) 37254 Solution As per questionDivisibility rule of 2 : last digits number is even No. , it means last digits is 0 , 2 , 4 , 6 , 8Such now as 638402079237254Divisibility rule of 5 : last digits
Which of the following numbers is divisible by both 2 and 5? Read More »
Find the value of x, y and z, so as to satisfy the equations given below:x + y +z = 12; x + y – z = 6; x – y + z = 4 Optionsa) x = 5, y = 4, z = 3b) x = 5, y = -4, z = -3c) x
A policeman noticed a thief at a distance of 500 metres. The policeman started running and the thief also started running at the same time. The thief is running at a speed of 15 km/h. It took 15 minutes for the policeman to catch the thief. Find the speed of the policeman (in km/h). Optionsa) 10b) 11c) 12d)
Places A and B are 20 km apart on the highway. A car starts from A and another from B at the same time. If the cars travel in the same direction at different speeds, they meet in one hour. If they travelled towards each other, they meet in 12 minutes. What are the speeds (in km/h) of
If the sum of three numbers is 18 and the sum of their squares is 36, then find the difference between the sum of their cubes and three times of their product. Optionsa) -1944b) 1449c) 4149d) -1494 Solution As per question The sum of the three numbers is 18a+b+c = 18The sum of their squares