Subject Experts Solutions for Chapter: Mathematical Operations, Exercise 1: EXERCISE

A group of $1200$ persons comprising captains and soldiers are travelling in a train. For every $15$ soldier there is one captain. The number of captain in a group is:

Ram cuts a cake into two halves and then cut one half into smaller pieces of equal size each of the small pieces of $20$ gram in weight. If he has a seven piece of the cake in all. What was the weight of the original cake?

The Father is now three times as old as his son. 5 year ago, he was four times as old as his son. The age of the son is_____.

Data of 450 students who took an examination in Social Science, Maths and Science is given below:
Passed in all subjects 167
Failed in all subjects 60
Failed in mathematics 199
Failed in Science 191
Failed in Social science 175
Passed in social science only 62
Passed in Mathematics only 48
Passed in science Only 52

How many students failed in One subject only?

Data of 450 students who took an examination in social Sciences, Math and Science is given below:
Passed in all subjects 167
Failed in all subjects 60
Failed in mathematics 199
Failed in Science 191
Failed in Social science 175
Passed in social science only 62
Passed in Mathematics only 48
Passed in science Only 52

How many students failed in Social science only?

Data of 450 students who took an examination in Social Science, Maths and Science is given below:
Passed in all subjects 167
Failed in all subjects 60
Failed in mathematics 199
Failed in Science 191
Failed in Social science 175
Passed in social science only 62
Passed in Mathematics only 48
Passed in science Only 52

How many students passed at least in one subject?

Data of $450$ students who took an examination in social Sciences, Mathematics and Science is given below:

Passed in all subjects $167$, Failed in all subjects $60$, Failed in mathematics $199$, Failed in Science $191$, Failed in Social science $175$, Passed in social science only $62$, Passed in Mathematics only $48$, and Passed in science Only $52$.

How many students failed in two subject only?

Data of 450 students who took an examination in social Sciences, Math and Science is given below:
Passed in all subjects 167
Failed in all subjects 60
Failed in mathematics 199
Failed in Science 191
Failed in Social science 175
Passed in social science only 62
Passed in Mathematics only 48
Passed in science Only 52

How many students passed in mathematics and at least in one more subject?