Face | 1 | 2 | 3 | 4 | 5 | 6 |
Frequency | 12 | 18 | y | 30 | 2y | 45 |
Given the table above as the results of tossing a fair die 150 times. Find the probability of obtaining a 5.
110
16
15
310
Correct answer is C
Probability of obtaining a 5 = frequency of 5total frequency
12+18+y+30+2y+45=150⟹105+3y=150
3y=45;y=15
Probability of 5 = 2×15150=15
In how many ways can four Mathematicians be selected from six ? ...
If f(x)=mx2−6x−3 and f′(1)=12, find the value of the constant m....
What is the angle between a=(3i−4j) and b=(6i+4j)?...
Find the range of values of x for which x2+4x+5 is less than 3x2−x+2...
Given that tanx=512, and tany=34, Find tan(x+y)....
If α and β are roots of x2 + mx - n = 0, where m and n are constants, form the ...
A circle with centre (5,-4) passes through the point (5, 0). Find its equation. ...
What is the coordinate of the centre of the circle 5x2+5y2−15x+25y−3=0?...