H.C.F of $\frac{2}{3}$ , $\frac{4}{5}$, and $\frac{6}{7}$ is :
1). $\frac{48}{105}$
2). $\frac{2}{105}$
3). $\frac{1}{105}$
4). $\frac{24}{105}$
2. Three numbers are in the ratio 2:3:4 and their H.C.F. is 12. The L.C.M. of the numbers is
6. The H.C.F. of two numbers is 96 and their L.C.M. is 1296. If one of the number is 864, the other is
7. The least number, which when divided by 12. 15. 20 or 54 leaves a remainder of 4 in each case, is :
8. Sum of two numbers is 384. H.C.F. of the numbers is 48. The difference of the numbers is
10. The greatest number that will divide 729 and 901 leaving remainders 9 and 5 respectively, is