Question
The mean of two samples sized 50 and 100 are 54.1 and
50.3 respectively. The standard deviation of these sample are 8 and 7 respectively. What will be the value of combined mean and standard deviation?Solution
In the following question, select the related number from the given alternatives.
22 : 330 :: 28 : ?
Himani goes 9m north and turns left and walks 6m. Again, she turns to her right and walks 5m. After this, she takes another right turn and walks 8m. So,...
After interchanging the given two signs and two numbers, what will be the value of the following expression?
÷ and +; 6 and 25
8 ÷ 42 + ...
If '+' means 'division', ' X ' means 'addition', ' - ' means 'multiplication' and '÷' means 'subtraction', then what is the value of the following expr...
If ‘÷’ means ‘-’, ‘-’ mean ‘+’, ‘+’ means ‘×’ and ‘×’ means ‘÷’, compute the value of the expression:
121 × ...
Select the option that is related to third number-cluster in the same way first and fifth number-cluster is related to second and sixth number-cluster....
By interchanging the given two numbers (not digits), which of the following equations will be correct?
24 and 9
I. 113 + 24 – 20 × 9 ÷...
If the following interchanges are made in signs, then what would be the value of the following expression?
16 ÷ 64 X 20 - 16 + 18
Interch...
If '+' means '-', 'X' means '+', '-' means '÷', and '÷' means 'X', then what is the value of the following expression?
72 - 9 + 16 X 8 ÷ 4 X 1...
If ‘$’ means ‘÷’, ‘#’ means ‘-’, ‘!’ means ‘×’ and ‘^’ means ‘+’, then the value of 84 ! 5 # 6 ^ 21 $ 7 is
...
