4boys step off from the same place. if their steps measures 16cm,28cm,40cm and 77cm respectively. at what distance from the starting point will they step together again?

  6160 cm

Step-by-step explanation:

The distance will be the least common multiple of these numbers. That can be figured by looking at their prime factors and choosing the smallest product that contains them all.

  16 = 2⁴

  28 = 2²·7

  40 = 2³·5

  77 = 7·11

The factors we need to include are 2⁴, 5, 7, 11. The product of these is

  2⁴ × 5 × 7 × 11 = 6160

The boys will step together again after 6160 cm.

answer: was that a question or answer?

step-by-step explanation:

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13