maths

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IBPS Clerk Anonymous

8 Comments

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monika 2 months ago

4   7  26  10  13  20  16  ?  ?

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monika 2 months ago

an automobile financier claims to be lending at simple interst,but he includes the interest every six months for calculating the principal. if he is changing an interest  of 10%,the effective rate of interest becomes-

a) 10%   b)10.25%      c)10.5%    d) none of thease

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GovJobAdda, BTM, Bangalore 2 months ago

This is the case of compound interest where interest is compounded half yearly.

So for 1st half rate of interest will be 5%

and for next half : 5% + 5% of 5%  i.e (5 + 0.25)% = 5.25%

so effective rate of interest for the year = (5 + 5.25)% = 10.25%

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monika 2 months ago

thanks a lot sir
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GovJobAdda, BTM, Bangalore Institute 2 months ago

there are 3 series.

4  _   _  10  _  _  16  _  _

     7   _  _   13  _   _ 19 _

          26  _   _ 20  _  _  14

so  19  ,  14

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monika 2 months ago

thanks sir
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monika 2 months ago

it is being given that(232+1) is completely divisible by a whole number.  which of the following number is completely divisible by this number-

1)   216+1          2)   216-1       3)  7*223        4)   296+1

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monika 2 months ago

A  train can travel 50% faster than a car.  both start at the same time at the point A and reach at point B  which was 60km  away from point A at the same time. on the way ,however the train lost  about 12.5  min  while stopping at the stations.  the speed of the car is

1)  100 km/h  2)110km/h    3) 120km/h  4)96km/h

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GovJobAdda, BTM, Bangalore 2 months ago

sab humse hi puch lena hai ??


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GovJobAdda, BTM, Bangalore Institute 2 months ago

Here  only option  (4) i.e   296 + 1  is greater than  (232+1)  so this will be the answer.

Alternately;

Let 232 = a   and  b =1

Use the formula : a2 - 1 = (a + 1)(a - 1)

for a  = 232 ;    (264 - 1) =  (232+1) (232-1)  so  (264 - 1) will be divisible by (232 + 1)  but it is not in the option.

Use formula :  (a3 + 1) = (a + 1)(a2 - a + 1)

So,  (296+1)  = (232+1)(264 - 232+1)   so (296+1) will be divisible by (232+1)

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GovJobAdda, BTM, Bangalore Institute 2 months ago

U can join this group and ask your queries. Other members will help u.

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Nithya Krishna 1 month ago

How can I be added in the group..

I have clicked on d link it is showing group is full

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