For the following questions answer them individually
After calculating the arithmetic mean of 25 integers as 73, it was observed that two integers were wrongly taken 76 and -23 instead of -76 and 23 respectively. Then the correct arithmetic mean is
The average height of 30 men is 158 cm and average height of another group of 40 men is 162 cm, then the average height of the combined group is
The arithmetic mean and the median of a frequency distribution are 51 and 50 respectively. Then the value of the Mode is
The probability that 3 boys and 3 girls can be seated in a row such that all the boys sit together side by side, is
A bag has 4 white, 5black and 6 red balls. The probability of drawing a ball which is wh ite or black is