437: The age of a father is twice that of the elder son. Ten years hence the age of the father will be three times that of the younger son. If the difference of ages of the two sons is 15 years, the age of the father is
(a) 100 years
(b) 70 years
(c) 60 years
(d) 50 years
440: Consider the following functionaries:
I. Cabinet Secretary
II. Chief Election Commissioner
III. Union Cabinet Ministers
IV. Chief Justice of India
Their correct sequence, in the Order of Precedence is
(a) III, IV, II, I
(b) IV, III, I, II
(c) IV, III, II, I
(d) III, IV, I, II