QUESTIONS ON REASONING (PART-11)
QUESTIONS ON REASONING (PART-11)
QUERY 201
If 3454 = 5, 2332 = 5, then 5245 = ?
5
10
7
8
MAHA GUPTA
RHS = Addition of 5 to the subtraction of the sum of second and fourth digits from the sum of first and third digits from the left; see how
(3+5) – (4+4) + 5 = 5
(2+3) – (3+2) + 5 = 5
Therefore the required number = (5+4) – (2+5) + 5 = 7 (option ‘3’)
QUERY 202
23, 51, 108, 225, ?, 936
327
628
459
531
MAHA GUPTA
Add sum of the digits to the twice of every number to get the next one, see how
23*2 + (2+3) = 51
51*2 + (5+1) = 108
108*2 + (1+0+8) = 225
225*2 + (2+2+5) = 459 (option ‘3’)
459*2 + (4+5+9) = 936
QUERY 203
2, 5, 8, 17, 26, 53, ?
MAHA GUPTA
To get the numbers at even places of the sequence add 1 to twice of their previous number, and to get the numbers at odd places of the sequence add difference of its two preceding numbers to it’s previous; see how
Numbers at even places
2*2 + 1 = 5
8*2 + 1 = 17
26*2 +1 = 53
Numbers at odd places
5 + (5 – 2) = 8
17 + (17 – 8) = 26
Therefore the required number
53 + (53 – 26) = 80 (answer)
QUERY 204
5 : 135::7 : ?
353
245
273
293
SHIV KISHOR
5^3 + 10 = 135
Similarly 7^3 + 10 = 353 (option ‘1’)
QUERY 205
3, 14, 5, 30, 7, ?
KUMAR SAURABH
See the pattern in every set of two number starting from the beginning
3, 3^2 + 5
5, 5^2 + 5
Therefore the required number
7, 7^2 + 5 = 54 (answer)
QUERY 206
7, 25, 61, 121, ?
210
211
212
209
MAHA GUPTA
2^3 – 1 = 7
3^3 – 2 = 27
4^4 – 3 = 61
5^3 – 4 = 121
Therefore the required number
6^3 – 5 = 211 (option ‘2’)
QUERY 207
16 : 4 :: 9 : ?
4
25
1
2
SAURABH KUMAR
4^2 = 16
2^2 = 4
Therefore, the pair on RHS will also be squares of alternate numbers, see how
3^2 = 9
1^2 = 1 (option ‘3’)
QUERY 208
678 = 366
567 = 225
946 = ?
KAPIL KATEWA
Subtract 20 from the product of the last two digits of LHS and write the left digit to the right of that product to get the number on RHS, see how
8*7 – 20 = 36 => 366
7*6 – 20 = 22 => 225
Therefore the required number
6*4 – 20 4 = 4 => 49
QUERY 209
5*6 = 35
8*4 = 28
6*8 = ?
46
34
23
38
KARTIK RUPANI
Shift left digit of LHS to the right and write half of the right digit on the left to get the number on RHS; see how
6/2 = 3 => 35
4/2 = 2 => 28
Therefore, the required number
8/2 = 4 => 46 (option ‘A’)
QUERY 210
81 : 8 :: ? : ?
128 : 13
136 : 9
124 : 5
144 : 11
RAWT SAURABH
(8+1)^2 : 8
Therefore the needed pair
(11+1)^2 : 11
= 144 : 11 (option ‘4’)
QUERY 211
13 ÷ 14 = 12
15 ÷ 16 = 30
21 ÷ 27 = 28
then
31 ÷ 29 = ?
LUV KUMAR
Find the product of the digits on the LHS to get RHS, see how
1*3*1*4 = 12
1*5*1*6 = 30
2*1*2*7 = 28
Therefore the required number
3*1*2*9 = 54 (answer)
QUERY 212
9/8, 9/4, 27/8, 9/2, ? , ?
SHIV KISHOR
(9/8)*(2/1) = 9/4
(9/4)*(3/2) = 27/8
(27/8)*(4/3) = 9/2
Therefore the next numbers
(9/2)*(5/4) = 45/8
(45/8)*(6/5) = 27/4
QUERY 213
2, 9, 30, ?, 436, 2195, 13182
216
105
324
178
MAHA GUPTA
9 = (2 + 7)*1
30 = (9 + 6)*2
105 = (30 + 5)*3 (option ‘2’)
436 = (105 + 4)*4
2195 = (436 + 3)*5
13182 = (2195 + 2)*6
QUERY 214
Find odd one out in following sequence
10, 25, 45, 54, 60, 75, 80
54
75
10
45
MAHA GUPTA
All numbers except 54 are multiples of 5; so 54 (option ‘1’) is correct.
QUERY 215
95, 115 , 145, 155, ?
215
175
185
165
MAHA GUPTA
Every number in the sequence is product of 5 and a consecutive prime number beginning with 19 see how
19*5 = 95
23*5 = 115
29*5 = 145
31*5 = 155
Therefore the required number
37*5 = 185 (option ‘3’)
QUERY 216
9 14 22
3 2 11
11 13 44
33 91 x
Aarav SINGH
The first and the last number in each column are 3, 7, and two times of the second and third respectively, see how
9 = 3*3
33 = 11*3
14 = 2*7
91 = 13*7
22 = 11*2
x = 44*2; means x = 88 (answer)
QUERY 217
200 —–(11)—–324
329 ——(X)—–137
MAHA GUPTA
Some of the digits of the end numbers is equal to the middle number, see how
2 + 0 + 0 + 3 + 2 + 4 = 11
Therefore the required number
3 + 2 + 9 + 1 + 3 + 7 = 25 (answer)
QUERY 218
Student : books :: postman : ?
delivery
mail
uniform
bicycle
MAHA GUPTA
MAIL (option ‘2’). The primary work of a student is dealing with books, the primary work of a postman is delivering of mail. So MAIL is correct.
QUERY 219
If
2 – 3 = 61
4 – 7 = 283
5 – 9 = 454
Then
1 – 8 = ?
MAHA GUPTA
To find the number on the RHS, write the difference of the number at the unit digit and put the product of both the numbers on the left of it, see how
3 – 2 = 1; 3*2 = 6 => 61
7 – 4 = 3; 7*4 = 28 => 283
9 – 5 = 4; 9*5 = 45 => 454
Therefore the required number
8 – 1 = 7; 8*1 = 8 => 87 (answer)