Question
Which of the following is a method of controlling plant
diseases that involves the use of beneficial microbes?Solution
Biological control involves the use of beneficial microbes to control plant diseases.
The average marks of 30 students in Class I is 60. The average marks of some students in Class II is 75. When all students of both classes are taken tog...
Average weight of 5 students in a class increases by 4 kg when weight of teacher is also included. If sum of average weight of 5 students and weight of ...
The average Cost Price of two items P and Q is Rs. 500. P and Q are sold at 15% and 25% profit respectively. If the total Selling Price of P and Q is Rs...
The average number of mangoes distributed among five farmers is 12. If each farmer received 1 mango more than the farmer before him, then find the highe...
- The average of two numbers ‘U’ and ‘V’ is 420 such that they are in the ratio 4:2 respectively. Another number ‘W’ is 180 more than ‘V’ and...
A number is such that when it is multiplied by 5, it gives another number which is as much above from 210 as the original number (itself) is below 210. ...
The batting average for 40 innings of a cricket player is 50 runs. His highest score exceeds his lowest score by 172 runs, If these two innings are excl...
The average age of a group of 12 students is 32 years. Two persons of age 40 years and 31 years, left the group and 2 persons of age 54 years and...
The number of students (boys + girls) in class 'A' is 96, and the ratio of the number of girls to boys in class 'A' is 2:1. If the average number of boy...
Anita bought a refrigerator at a discount of 20% on MRP. She earned one-third the amount of her CP by renting it for 300 days. After that, she resells i...
