In a survey of 600 students in a school, 150 students were found to be taking tea and 225 taking coffee, 100 were taking both tea and coffee.

Let C denote the set of people who like coffee, and T denote the set of people who like tea  n(C ∪ T) = 70, n(C) = 37, n(T) = 52  We...

Let U be the set of all students in the group.  Let E be the set of all students who know English.  Let H be the set of all students who know...

Initial difference in height = (150 – 100) m = 50 m  Distance travelled by first body in 2 s = h1 = 0 + 1/ 2 g (2)2 = 2...

(i) Big families can be one of the reasons. Only small family gets good health and education unlike that of a large family. (ii) The Government has initiated the 'Hum do...

Let C denote the set of people who like coffee, and T denote the set of people who like tea n(C ∪ T) = 70, n(C) = 37, n(T) = 52...

Let U be the set of all students who took part in the survey. Let T be the set of students taking tea. Let C be the set of students taking coffee. Accordingly,...

Let U be the set of all students in the group. Let E be the set of all students who know English. Let H be the set of all students who know...

Let the side of the square be x. No. of students = x2 + 24 New side = x + 1 No. of students = (x + 1)2 – 25 APQ => x2 +...

Relative luminousity =Luminous flux of a source of given wavelength / Luminous flux of a source of 555 nm of same power Let the radiant flux needed be P watt. Ao, 0.6...

(c) : According to Gibb's formula, ΔG = ΔH – TΔS Since ΔH and ΔS, both are +ve, for ΔG < 0, the value of T > Te.