√4096/100+ √4096/10000 + √4096/1000000 + √4096/100000000
=√4096 / 10 + √4096/ 100 + √4096/ 1000 + √4096/ 10000
=64/10 + 64/100 + 64/1000 + 64/10000
=6.4 + .64 + .064 + .0064

Correct Option: C

√4096/100+ √4096/10000 + √4096/1000000 + √4096/100000000
=√4096 / 10 + √4096/ 100 + √4096/ 1000 + √4096/ 10000
=64/10 + 64/100 + 64/1000 + 64/10000
=6.4 + .64 + .064 + .0064
= 7.1104

√5/3 = √15/9
= √15/3

Correct Option: C

√5/3 = √15/9
= √15/3
= 3.88/3
= 1.29

Given expression = 3√5 / 2√5 - 0.48
= (3 x 2.24) / (2 x 2.24) - 0.48
= 6.72 / 4.48 - 0.48
= 6.72 / 4

Correct Option: B

Given expression = 3√5 / 2√5 - 0.48
= (3 x 2.24) / (2 x 2.24) - 0.48
= 6.72 / 4.48 - 0.48
= 6.72 / 4
= 1.68

122.76 / 15.50 = 12276/1550
= (12276 / 155) x (1/10)

Correct Option: B

122.76 / 15.50 = 12276/1550
= (12276 / 155) x (1/10)
= 79.2 / 10
= 7.92

Given expression = [ (.538)² - (.462)² ] / .076
= [(.538 + .462)(.538 - .462)] /.076
=.076 / .076

Correct Option: C

Given expression = [ (.538)² - (.462)² ] / .076
= [(.538 + .462)(.538 - .462)] /.076
=.076 / .076
= 1