1.

If your allowance is Re.1 and it is doubled every day, how many days would it take for you to have over Rs.35?1). 5 days2). 7 days3). 9 days4). 10 days

Answer»

Given, if your allowance was a Re.1 and it is DOUBLED every day

Thus, after (n + 1) DAYS, the allowance = 2n × 1 = 2n

⇒ 2n > 35

⇒ 26 = 64

⇒ n = 6

∴ Number of days after which the allowance is over 35 = n +1 = 6 + 1 = 7 days


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