Question
If [5a - (1/2a)] = 7, then find the value of [25a² +
(1/4a²) - 3]Solution
[5a - (1/2a)] = 7
On squaring both sides,
Or, 25a² + (1/4a²) - 2 × 5a × (1/2a) = 49
Or, 25a² + (1/4a²) - 5 = 49
So, 25a² + (1/4a²) = 54
Required value = 54 - 3 = 51
Statements: H ≥ R, T < L, R ≥ T, L < N > I
Conclusion:
I. R > I
II. N ≥ T
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and ...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is/are definitely true and th...
Statements : Q = R; S ≥ T; P ≤ Q; R > V; R > S; T ≥ U
Conclusions :
(i) R > U (ii) V ≥ U (iii) P = R (iv) P < R
Statements: M # N # O $ P & Q % R % S
Conclusions : I. Q @ S ...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is/are definitely true and th...
Which of the following symbols should replace the sign (@) respectively in the given expression in order to make the expression Y ≥ Z and D > K defini...
Statement: G ≤ L ≥ O ≥ W ≥ I < N
Conclusion: I. O > G II. W < N
...Statements: F ≥ O = Z, Z ≥ P > L
Conclusions:
I. O > P
II. F > L
III. O ≥ L
IV. P > F
...Statements: M $ K; K & N, N % R, R @ W
Conclusions:
I. W & K
II. K & W ...
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