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Speed of the motorboat upstream = 27/(9/4) = 12 km/hr Let the speed of the current be x km/hr ⇒ 16 – x = 12 ⇒ x = 4 km/hr Speed of motor boat downstream = 16 + 4 = 20 km/hr Time taken to cover 27 km at 20 km/hr = 27/20 = 27/20 hours or 1 hour 21 minutes
5, 15, 30, 135, 405, 1215, 3645
Identify the letter-cluster that does not belong to the following series.
RBK, TYM, VVO, XSP, ZPS, BMU
60 32 4 8 -4
A series is given with one wrong term. Select the wrong number from the given series.
17, 29, 43, 59, 77, 97, 112
Select the wrong term in the series.
7, 14, 42, 210, 1470, 17640
Find the wrong number in the following number series:
2500, 1000, 400, 160, 60
A series is given with two wrong terms. Select the wrong term in the given series.
32, 43, 58, 73, 92, 117, 144
Select the wrong term from the given series?
RFD, OBY, LXT, ITO, FSK
8, 20, 48, 108, 232, 482
Arrange the following words in a logical and meaningful order.
1. Monkey
2. Elephant
3. Rat
4. Fly
5. Lion