Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q11.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.

(A) 2 3 7 25 121 721
(B) 3 (a) (b) (c) (d) (e)

What will come in the place of (c) ?

1) 31 2) 39
3) 45 4) 49
5)None of these
Answer : 49
Explanation : x 2 -1, x 3-2, x 4-3, x 5 -4 and so on ...
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Q12.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.

(A) 2 3 10 39 172 885
(B) 5 (a) (b) (c) (d) (e)

What will come in the place of (d) ?
1) 175 2) 196
3) 208 4) 244
5)None of these
Answer : 244
Explanation : x 1+12,, x 2+22, x 3+32, x 4+42 and so on ....  
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Q13.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.


(A) 3 12 30 66 138 282
(A) 7 (a) (b) (c) (d) (e)

What will come in the place of (b)?

1) 34 2) 46
3) 70 4) 76
5)None of these
Answer : 46
Explanation : x 2 +6 , x 2+6 , and so on      
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Q14.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.


(A) 7 20 46 98 202 410
(A) 4 (a) (b) (c) (d) (e)

What will come in the place of (d)?

1) 146 2) 162
3) 166 4) 184
5)None of these
Answer : None of these
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Q15.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.

(A) 9 10 16   57 212    1085
(A) 2 (a) (b) (c) (d) (e)

What will come in the place of (c)?

1) 15 2) 18
3) 25 4) 36
5)None of these
Answer : 15
Explanation : x 1 + 12, x 2 -22, x 3+32, x 4 -42 and so on   
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Q16.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.

(A) 3  5 22 13.5  35  19
(B) 5 (a) (b) (c)  (d)  (e)

What will come in the place of (c)?

1) 13 2) 14.5
3) 15.5 4) 16
5)None of these
Answer : 14.5
Explanation : +7 x 1/2 , +6 x 2 , + 5 x 1/2, + 4 x 2, so on  
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Q17.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).Yoy have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.

(A)   3   40      176    537    1078      1079
(B)     1   (a)      (b)        (c)     (d)      (e)

What will come in the place of (e) ?

1) 839 2) 738
3) 829 4) 938
5)None of these
Answer : 839
Explanation : x 5 + 52 ,  x 4 + 42 , x 3 +32
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Q18.
Directions:In each of the following questions a number series is given. After the series a number is given followed by (a),(b),(c),(d)&(e).You have to complete the series starting with the number given, following the sequence of the given series, and answer the questions given below the series.

(A)      4   2.25    3.25 7.125   18.25 51.875
(B)        7   (a)      (b)   (c)      (d)   (e)

What will come in the place of (b) ?
1) 4.125 2) 5.25
3) 6.75 4) 4.125
5)None of these
Answer : 4.125
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Q19.
A person divide his capital worth Rs.4332 into three parts in such way their interest after 2,3 and 4 years equal to each other. The rate of interest on these three parts have to be 4% , 7% and 11% per annum, respectively at S.I. What is the difference between the largest and the smallest part of money invested ?
1) Rs.1860 2) Rs.2052
3) Rs.2268 4) Rs.2468
5)None of these
Answer : Rs.2268
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Q20.
The rate of SI in bank A and bank B are in the ratio is 6:7. A businessman wants to deposits his total savings in these two banks in such a way that he received equal quarterly interest from both the banks.What should be his ratio of saving in bank A to bank B ?
1) 3:4 2) 4:5
3) 6:7 4) 7:6
5)None of these
Answer : 7:6
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