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CBSE - Aptitude Mathematics
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Practice Question
Aptitude Mathematics
.
Aptitude Mathematics
Harmonic mean of 2,8,16,4,32,1 is equal to
1.30.5
2.305
3.3.05
4..305
Correct Answer: 3
.
Related Questions
Aptitude Mathematics
1
A two-digit number is such that the product of the digits is 14. When 45 is added to the number, then the digits interchange their places. Find the number.
1. 72
2. 27
3. 37
4. 14
Correct Answer: 2
2
In a house, there are six 40 watt lamps which are on for 5 hours a day and three 80 watt fans which are on for 10 hours a day. If electricity costs Rs.2 per kilowatt hour, what is the monthly electricity bill?
1. Rs.216
2. Rs.280
3. Rs.315
4. Rs.400
Correct Answer: 1
3
The amount of fat in an ounce of food A plus the amount of protein in an ounce of food A is 100 grams. The amount of protein in an ounce of food A minus twice the amount of fat in an ounce of food A is 10 grams. How many grams of protein are there in an ounce of food A?
1. 30
2. 45
3. 55
4. 70
Correct Answer: 4
4
Standard deviation is also called
1. average square deviation
2. mean square deviation
3. root mean square deviation
4. none of these
Correct Answer: 3
5
The greatest four digit number divisible by 88 will be
(1) 8888 (2) 9768 (3) 9944 (4) 9988
Correct Answer: 3
