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(D) At least two houses have green roofs
(E) At least two houses have yellow roofs
Ans: (C)
11). Which must be false ?
(A) House A has a yellow roof
(B) House A & C have different colour chimney
(C) House D has a black chimney
(D) House E has a white chmney
(E) House B&D have the same color roof.
Ans: (B)
12). If house C has a yellow roof. Which must be true.
(A) House E has a white chimney
(B) House E has a balck chimney
(C) House E has a red chimney
(D) House D has a red chimney
(E) House C has a balck chimney
Ans: (A)
13). Which possible combinations of roof & chimney can house
I. A red roof 7 a black chimney
II. A yellow roof & a red chimney
III. A yellow roof & a black chimney
(A) I only (B) II only (C) III only (D) I & II only (E) I&II&III
Ans; (E)
14). What is the maximum total number of green roofs for houses
Ans: (C)
15). There are 5 red shoes, 4 green shoes. If one drasw randomly a shoe
what is the probability of getting redshoe is 5c1/9c1
16). What is the selling price of a car? cost of car is Rs 60 &
profit 10% profit over selling price Ans : Rs 66/-
17). 1/3 of girls , 1/2 of boys go to canteen .What factor and total
number of clasmates go to canteen. Ans: cannot be determined.
18). price of a product is reduced by 30% . What percentage should
be increased to make it 100% Ans: 42.857%
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