If Arithmetic Mean of a, a+3, a+6, a+9 and a+12 is 10, then a is equal to:

If Arithmetic Mean of x, x+2, x+4 and x+6 is 5. Then find the value of x is

On a weekend Ritu was playing cards with her family. The deck has 52 cards. If her brother drew one card.
Find the probability of getting a king of red colour.

If Median of data 16,18, 20, 24-x, 20 + 2x, 28, 30, 32 is 24 then x is

If Mode of data 64, 60, 48, x, 43, 48, 43, 34 is 43 then x+3 is

Ishan is a wholesale dealer in eggs. He procures eggs directly from the poultry farms and sells them to the nearby stores.
The probability of getting a bad egg in a lot of 500 is 0.014. the number of bad eggs in the lot is:

The given question consists of two statement _ assertion and reason Answer the question selecting the appropriate option given below:
ASSERTION If the value of mode and mean is 60 and 66 respectively , then value of median is 64.
Reason : Median = (mode+2mean)

Assertion (A): If the number of runs scored by 11 players of the cricket team of India are 5, 19, 42, 11, 50, 30, 21, 0, 52, 36, 27 then median is 30.

Reason (R): Median = ((n+1) /2)thvalue, if n is odd

The mean of 25 observations is 9. If each observation is increased by 4, then the new mean is

The mean age of combined group of men and women is 30 years. If the mean of the age of men and women are respectively 32 and 27, then the percentage of women in the group is:

The probability of event equal to zero is called;

A data has 25 observations arranged in descending order. Which observation represents the median?

The Mean of five number is 15. If we include one more number, the mean of 6 numbers become 17. The included number is

Two friends are playing a game.If two dice are thrown in the air by one of the friend, the probability of getting sum as 3 will be

Which is the empirical relation between Mean, Median and Mode

Rahul and Ravi planned to play Business (board game) in which they were supposed to use two dice. 
Ravi got the first chance to roll the dice. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is 8?

While computing mean of grouped data ,we assume that the frequencies are :

Assertion (A): If the mode and mean of a grouped frequency
distribution are 60 and 66 respectively, then the median is 64.
Reason (R): Median = (mode+2mean) /2

Mean of 100 items is 49.It was discovered that 3 items which should have been 60, 70 , 80 were wrongly read as 40, 20,50 respectively.The correct mean is :