Question
Find the value of 98 × 102 without doing the full
multiplication directly.Solution
Use identity: (a − b)(a + b) = a² − b² Here, 98 = 100 − 2 and 102 = 100 + 2 So, 98 × 102 = (100 − 2)(100 + 2) = 100² − 2² = 10,000 − 4 = 9,996
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 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 t...
Statements: Z % Y; X # W; U % V; W & V; Y @ X
Conclusions:Â Â Â Â Â
I. U @ X Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...
Statements: Â Y $ Z, H $ D, Z * D
Conclusions: Â Â Â Â a) Y & HÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â b) Y * D
...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 t...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is /are definitely true and the...
Statements:
L ≥ M = N < P; O < Q ≥ R =S ≥ L
Conclusions:
I). Q > M
II). Q = N
Statement: F < G < H ≥ J; F ≥ K > L
Conclusion:
I. H > L
II. H = L
Statement: X > W = P; X > G > F; X < O
Conclusion: I. F < W      II. P ≤ F
Statements: J < K; L = M; K >N ≥ L
Conclusions:
I. J < L
II. N = M
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