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Given, Number of white balls = 13 Let x be the number of black balls. Total number of balls in the bag = 13 + x Also, the probability of drawing a black ball from the bag is twice that of drawing a white ball. ⇒ x/(13 + x) = 2[13/(13 + x)] ⇒ x = 26 Hence, the number of black balls in the bag = 26.
Thousands of scientific investigation have confirmed the association of smoking with the number of diseases.
Identify the segment in the sentence that contains a grammatical error-
The taxi driver demanded fifty rupees to carry my luggages.
My friend told me that she was ‘ sickly tired’ of her working schedule.
Developmental activities of the government (a) / come to a standstill (b) / due to paucity of funds (c) / No Error (d)
I had to / call the event down / as there / weren’t enough participants.
