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Solution In A, replace the plural number DOZENS with the singular number DOZEN. When a definite numeral adjective like TWO in this case is used before DOZEN, it cannot be pluralised. Thus, A is the right answer.
tan 20˚ x tan 23˚ x tan 67˚ x tan 70˚ = ?
In ∆ABC, AB = 5cm, BC = 6cm and AC = 10cm then find out the value of cos A?
If sin θ and cos θ are the root of standard Quadratic Equation , then which of the following is true ?
1. a2 + b2 - 2ac =...
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