# Test: IF U BELIEVE IN YOURSELF, THEN TRY TRY & TRY TILL U SUCCEED.....

## Category: Math

## Description: It's a maths test, which u can solve but need practise.

## Keywords:

## The period of 2 sin x cos x is

4 pi sq.
2 pi
4 pi
pi

## The mean of a data set is equal to 10 and its standard deviation is equal to 1. If we add 5 to each data value, then the mean and standard deviation become

mean = 15 , standard deviation = 6
mean = 10 , standard deviation = 6
mean = 15 , standard deviation = 1
mean = 10 , standard deviation = 1

## A school committee consists of 2 teachers and 4 students. The number of different committees that can be formed from 5 teachers and 10 students is

1000
1500
2100
8000

## The three solutions of the equation f(x) = 0 are -2, 0, and 3. Therefore, the three solutions of the equation f(x - 2) = 0 are

- 4, -2, and 1
-2, 0 and 3
4, 2, and 5
0, 2 and 5

## Is x = 15 , if: x+3x/2=5(x-3)/3

True
False

## If f(x) is an odd function, then | f(x) | is = an even function

True
False

## If Log x (1 / 8) = - 3 / 2, then x is equal to

-4
4
1/4
10

## Calculate the area of a triangle whose sides are 13 cm, 5 cm and 12 cm.

32 cm sq.
900 cm sq.
30 cm sq.
15 cm sq.

## The exam scores of all 500 students were recorded and it was determined that these scores were normally distributed. If Jane's score is 0.8 standard deviation above the mean, then how many, to the nearest unit, students scored above Jane?

394
250
400
106

## If Log 4 (x) = 12, then log 2 (x / 4) is equal to

11
48
-12
22

## The probability that an electronic device produced by a company does not function properly is equal to 0.1. If 10 devices are bought, then the probability, to the nearest thousandth, that 7 devices function properly is

0.057
0.478
0.001
0

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