Question
A sum of money lent out at simple interest amounts to
Rs.620 after 2 years and to Rs.1220 after a further period of 4 years. The sum is:Solution
Principal + SI for 2 years = Rs. 620 ------ (i) Principal + SI for 6 years = Rs. 1220 ------ (ii) Subtracting equation (i) from (ii), we get => S.I. for 4 years = (1220 – 620) = Rs. 600 ∴ S.I. for 2 years = 600 × (2/4) = Rs. 300 ∴ Principal = (620 – 300) = Rs. 320
22 44 176 1078 8448
...15 , 33 , 71 , 150 , 307 , 625
To find the Next number in the given series.
342 510 726 996 1326 ?
...7Â Â Â Â Â 14Â Â Â Â Â 42Â Â Â Â Â 168Â Â Â Â Â Â 840Â Â Â Â Â ?
...2556   636    156    ?    6
48Â Â Â Â 61 Â Â Â Â 76 Â Â Â Â 94Â Â Â Â 116 Â Â Â Â Â ?
100Â Â Â Â 221Â Â Â Â 77Â Â Â Â 245Â Â Â Â 50Â Â Â 275
What will be the next number in the series?
2,5,11,23,47,?
(32.03 + 111.98) ÷ 18.211 = 89.9 – 20.23% of ?
75    196    52    221    ?    250
