Lokesh starts a business with Rs 240000. After 3 months Vishal joins him with Rs 210000. At the end of the year what will be the ratio of their profit?
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If a--b = 4 and ab = 45, find the value of a3 - b3
(a – b)2 = a2 + b2 -2ab ⇒ 16 = a2 + b2 – 90 ⇒ a2 + b2 = 106 a3 – b3 = (a – b) (a2 + b2 + ab) ⇒ a3 – b3 = 4 X (106 + 45) ⇒ a3 – b3 = 4 X 151 ⇒ a3 – b3 = 604
What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)?
(184.002 - 29 ÷ 5) × 29.997 = ?
Ans.(184 - 6) × 30 = ?178 × 30 = ?? = 5340
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