2 * 2 * 5 * 7 * 11 = 1540
2*2 = 4 * 3 = 12 * 5 = 60 * 5 = 300 * 7 = 2,100
2 * 3 * 3 * 5 * 7 = 630
2 x 2 x 5 x 7 x 11 = 1540
7*7*2*2*5*3 =(7*7)*(2*3)*(2*5) =49*6*10 =(50-1)*6*10 =(50*6-6)*10 =(300-6)*10 =294*10 =2940
1540 has the prime factorization of 2 times 2 times 5 times 7 times 11
2 x 3 x 5 x 7 = 210
7
2100
It is: 3/2 times 5 = 7 and a 1/2 or 7.5
2 x 5 x 7
5/7 x 7/10 = 35/70 = 1/2 1/2 x 5/21 = 5/42