TCS Company Numerical Ability Data Sufficiency

Is z less than w? z and w are real numbers.
(I) z^2 = 25
(II) w = 9
To answer the question,
a) Either I or II is sufficient
b) Both I and II are sufficient but neither of them is alone sufficient
c) I & II are sufficient
d) Both are not sufficient

Read Solution (Total 4)

b
Neither is alone sufficient because they show no relation between z and w
But when both are considered we get value of both z and w, so can answer the qn
14 years agoHelpfull: Yes(9) No(0)

but the from 1 we did not get a unique answer so the option d is correct
13 years agoHelpfull: Yes(2) No(2)
Z^2=25
z=5
w=9
so,z
4 years agoHelpfull: Yes(0) No(1)
correct ans is option b
2 years agoHelpfull: Yes(0) No(0)

TCS Other Question

There are 9 cards. Arrange them in a 3*3 matrix. Cards are of 4 colors. They are red, yellow, blue, green. Conditions for arrangement: one red card must be in first row or second row. 2 green cards should be in 3rd column. Yellow cards must be in the 3 corners only. Two blue cards must be in the 2nd row. At least one green card in each row. A speaks truth 70% of the time; B speaks truth 80% of the time. What is the probability that both are contradicting each other?