Question (3/84)
Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?(A) 12
(B) 14
(C) 16
(D) 18
Question (4/84)
Find the smallest number which when divided by 16, 18, 20 and 25 leaves 4 as remainder in each case, but when divided by 7 leaves no remainder.(A) 17004
(B) 18000
(C) 18002
(D) 18004