1761: The age of a man is three times the sum of the ages of his two sons. Five years hence, his age will be doubled of the sum of the ages of his sons. The father's present age is
(a) 40 years
(b) 45 years
(c) 50 years
(d) 55 years
1762: The Chishti saint, in whose honour "Urs" is held in Ajmer every year, was
(a) Nizamuddin Auliya
(b) Moin-ud-din
(c) Nasiruddin Chiragh-i-Delhi
(d) Hamidud-Din Nagori
1763: Which one of the following is NOT an astronomical object?
(a) Pulsar
(b) Brittle Star
(c) Black hole
(d) Quasar
1764: The International Development Association, a lending agency, is administered by the
(a) International Bank for Reconstruction and Development
(b) International Fund for Agricultural Development
(c) United Nations Development Programme
(d) United Nations Industrial Development Organization
1765: Octopus is
(a) an arthropod
(b) an echinoderm
(c) a heimchordate
(d) a mollusc