H.C.F. and L.C.M. of Numbers
116 questions in this chapter, page 3 of 3.
Study loop for H.C.F. and L.C.M. of Numbers
1. Practise the PYQsPrevious-year questions, with answers
General
ABC26GN0561 · A gardener has to plant trees in rows containing equal number of trees. If he plants in rows of 6, 8, 10 or 12, then five trees are left… · 2004
ABC26GN0562 · When Seeta made necklaces of either 16 beads, 20 beads or 36 beads, not a single bead was left over. What could be the least number of… · 2008
ABC26GN0563 · An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10 a.m. The… · 2007
ABC26GN0564 · 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… · 2006
ABC26GN0565 · Four bells begin to toll together and toll respectively at intervals of 6, 7, 8 and 9 seconds. In 1.54 hours, how many times do they toll… · 2006
ABC26GN0566 · Four different electronic devices make a beep after every 30 minutes, 1 hour, 1 1/2 hour and 1 hour 45 minutes respectively. All the…
ABC26GN0567 · Three girls start jogging from the same point around a circular track and each one completes one round in 24 seconds, 36 seconds and 48… · 2009
ABC26GN0568 · Three persons walking around a circular track complete their respective single revolutions in 15 1/6 seconds, 16 1/4 seconds and 18 2/3…
ABC26GN0569 · A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308…
ABC26GN0572 · Find the HCF of 132, 204 and 228. · 2014
ABC26GN0573 · If three numbers are 2 a, 5 a and 7 a, what will be their LCM? · 2014
ABC26GN0575 · A number x is divided by 7. When this number is divided by 8, 12 and 16. It leaves a remainder 3 in each case. The least value of x is…
ABC26GN0576 · The number of pair of positive integers whose sum is 99 and HCF is 9 is [SSC-CHSL (10 + 2) Exam, 2015]
ABC26GN0577 · The ratio of two numbers is 3 : 4 and their LCM is 120. The sum of numbers is [SSC-CHSL (10 + 2) Exam, 2015]
ABC26GN0579 · The greatest four digit number which is exactly divisible by each one of the numbers 12, 18, 21 and 28 [SSC-CHSL (10 + 2) Exam, 2015]
ABC26GN0580 · The traffic lights at three different signal points change after every 45 seconds, 75 seconds and 90 seconds respectively. If all change… · 2016