Q.201- The average age of P, Q and R is 15 years more than R’s age. If the total age of P and Q together is 39 years, then R’s age is ?.
Q.202- The average age of P, Q and R is 15 years more than R’s age. If the total age of P and Q together is 39 years, then R’s age is ?.
Q.203- The average of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. The correct average of the observation is.
Q.204- Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. The average height of all of them is :
Q.205- The average of the largest and smallest 3 digits numbers formed by 0, 2 and 4 would be :