In an engineering college, 80 students get chance for Computer Science, 75 for information Technology, 72 for Electronics. If 60 students get chance in 1st and 2nd, 50 in 2nd and 3rd, 40 in 1st and 3rd and 30 get chance in all three branches, how many seats are there in the engineering college? [The college has only three disciplines.]

There are 25 rows of seats in an auditorium. The 1st row is of 20 seats , the 2nd row of 22 seats , the 3rd row of 24 seats and so on. How many seats are there in the 21st row ?

The sum of three numbers is 315. If the ratio between 1st and 2nd is 2 : 3 and the ratio between 2nd and 3rd is 4 : 5, then find the 2nd number.

The sum of three numbers is 57 and the ratio of 1st and 2nd is 3 : 7 and 2nd to 3rd is 7:9 The second number is-

Directions: Read the given information carefully and answer the following questions. Three streams Arts, Science, and Commerce are offered in 3 colleges A, B, and C. There are 1750 students in college A. The number of Commerce students in college A is 400 more than that of in Science in college A. the ratio of the number of students in college A in Arts and Science is 23 : 2) (2) There are 3250 students in Arts in all colleges. The number of students in Science in all colleges is 37.5% less than that of in Commerce in all colleges. (3) The number of Arts students in college C is 10% more than that of in college B. the ratio of the number of students in Science in college B to that of in college C is 3 : 4) (4) The number of students in Commerce in college B is 30% less than that in college A. total number of students in college B is 280 less than that of in college C. The total number of students in college B is what percent more/less than that of in Science in all colleges?

The rate constant is numerically same for three reactions of 1st, 2nd and 3rd order respectively. If conc, of the reactant is more than 1M, which one is true for the rates of the three reactions ?

Let the sum of the three terms of a G.P. is 14. If 1 is added to the 1st and the 2nd term and 1 is subtracted from the 3rd term, then they will be in A.P. The value of the smallest term is -

If the energy needed to remove the 1st, 2nd and 3rd valence electron from an atom is V, 2V and 3V then the energy required to remove all three in one step will be xV. What is numerical value of x ?