Question
History books are never together.
In how many ways 5 History books and 7 geography books can be arranged in a row so that :Solution
No. of when History books are always together = 5! × 8! Total no. of ways when all the books are arranged without any condition = 12! No. of ways when History book are never together = 12! – (5! × 8!)
In the question, relationship between some elements is shown in the statements (s). These statements are followed by two conclusions. Read the statemen...
Statements:
T % W % B $ I @ L
Conclusions:
I. B * T
II. L © B
III. L * T
Statements: W > O > E ≤ N > P; L ≥ U; P > Q = R > U
Conclusions:
I. N > U
II. P > U
III. P < L
IV....
If '>' denotes '+', '<' denotes '-', '-' denotes '×', '×' denotes '÷', '÷' denotes '=', then choose the correct statement of the following.
...Statements:
A ≥ Z > B ≥ Y; C > B ≥ W
Conclusion:
I. A > W
II. C > Y
Statements: U ≤ X = V < W; V > T = Q ≥ R
Conclusions: I. V ≥ R II. W > R
Statements: M ≤ N; O < R; O = N; S ≥ Q; N > S
Conclusions:
(i) Q < M
(ii) N ≥ Q
(iii) M > R
...Statements: I > D > J < E; C > J > K; G < K > A
Conclusions:
I. I > A
II. G < E
III. D ≥ K
Statements: W ≤ T = R; T < U < S; X = W ≥ Y
Conclusions:
I. S > Y
II. W ≥ S
III. U ≥ Y
In which of the following expressions will the expression ‘S > R’ and ‘W < T’ be definitely false?
