Replace and mnsq2 in each of the following by the correct number :
(a) 27=8□ (b) 58=10□
(c) 35=□20 (d) 4560=15□
(e) 1824=□4
a)27=8□
cross multiplying
2×□=7×8
□=7×82
□=7×4
□=28
so27=828
b)58=10□
5×□=8×10
□=8×105
□=8×2
□=16
so58=1016
c)35=□20
cross multiplying
20×3=□×5
5×□=3×20
□=20×35
□=4×3
□=12
d)4560=15□
cross multiplying
45×□=15×60
□=15×6045
=60/33/3
□=20
e)1824=□4
cross multiplying
18×4=□×24
□=18×4
□=18×424
□=18/26/2
□=18/23/3
□=3