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CBSE - Aptitude Mathematics
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Practice Question
Aptitude Mathematics
.
Aptitude Mathematics
The standard deviation from the following data is
x : 2 4 5 6 10
f : 1 3 7 5 4
1.2.74
2.2.23
3.3.42
4.2.35
Correct Answer: 2
.
Related Questions
Aptitude Mathematics
1
A car owner buys petrol at Rs.7.50, Rs.8.00 and Rs.8.50 per liter for three successive years. What approximately is the average cost per liter of petrol if he spends Rs.4000 each year.
1. Rs.8
2. Rs.9
3. Rs.7.98
4. Rs.8.50
Correct Answer: 3
2
The area of a square is 42354064. What is its side?
1.6504
2.6508
3.6502
4.none of these
Correct Answer: 2
3
If x and y are negative numbers, which of the following statements is (are) always true?
I. x - y is negative
II. -x is positive
III. (-x)(-y) is positive
1. I only
2. II only
3. I and II only
4. II and III only
Correct Answer: 4
4
Vishal goes to a shop to buy a radio costing Rs.2568. The rate of sales tax is 7%. He tells the shopkeeper to reduce the price of the radio to such an extent that he has to pay Rs.2568, inclusive of sales tax. Find the reduction needed in the price of the radio.
1. Rs.179.76
2. Rs.170
3. Rs.168
4. Rs.169
Correct Answer: 3
5
*X is defined as he largest integer which is less than X. What is the value of (*3) + (*4) + (*4.5)?
1. 9
2. 10
3. 11
4. 11.5
Correct Answer: 1
