Q. The mean of ten observations is 23. If two observations 4 and 7 are substituted by 3 and 8, then the new value of mean will be

Related MCQs on Math

Q. A shopkeeper sells one transistor for Rs. 840 at a gain of 20% and another for Rs. 960 at a loss of ...

Q. The ratio of monthly salaries of X and Y is 6:5. If the salary of X is increased by 25% and that of ...

Q. The average of a group of men is increased by 5 years when a person aged of 18 years is replaced by ...

Q. A can do a piece of work in 4 hours; B and C can do it in 3 hours. A and C can do it in 2 hours. How...

Q. Which of the following is smallest?

Q. The average temperature of the first three days is 27° C and that of the next three is 29° C...

Q. P, Q and R enter into a contract for a piece of the work for ₹ 1100. P and Q together are supposed...

Q. A fires 5 shots to B's 3 but A kills only once in 3 shots while B kills once in 2 shots. When B has ...

Q. A sum of money is distributed among A, B, C, D in a proportion of 5:2:4:3. If C gets Rs.1000 more th...

Q. The real number to be added to 13851 to get a number that is divisible by 87 is :

Download our easy to use, user friendly Android App from Play Store. And learn MCQs with one click.