Directions(1-5): Find the missing term of the following questions.
- 21,26,30,34,39,?
4038423032Option C
(19+23)/2 = 21
(23+29)/2 = 26
(29+31)/2 = 30
(31+37)/2 = 34
(37+41)/2 = 39
(41+43)/2 = 42 - 412,476,351,567,?,736
250224288215200Option B
+4^3 -5^3 +6^3 -7^3 +8^3
? = 224 - 242,243,240,265,258,339,?
328350402300325Option A
+1^2,-3,+5^2,-7,+9^2,-11
? = 328 - 13,26,22,132,124,?
14401240115010001250Option B
13*2 = 26
26-4 = 22
22*6 = 132
132-8 = 124
124*10 = 1240 - 4,12,60,420,?,41580
35203000333337803300Option D
4*3 = 12
12*5 = 60
60*7 = 420
420*9 = 3780
3780*11 = 41580 - How many girls from the college are good at studies?
1145Data inadequate.125017521000Option B
Data inadequate. - How many girls from the college are good at dancing?
11101330122011701500Option D
The required number of girls
= 7800*15/100
= 1170 - How many girls from the college are good only at singing?
780660720700650Option A
The number of girls good only at singing
= 10% of 7800 = 780 - How many girls from the college are good only at cooking?
10051365145013001350Option B
The number of girls good at cooking = 7800 × 35%
= 2730
The number of girls good at (i) cooking and studies = 2730 × 20%
= 546
(ii) cooking and dancing but not in studies = 2730 × 30% = 819
Hence, the number of girls good at cooking only is either equal to or less than (2730 – 546 – 819)
=1365. - How many girls from the college are good at drawing?
324320325390300Option D
The number of girls good at drawing = 5% of 7800
= 390
Directions(6-10): Out of the total number of 7800 girls in a college, 15% are good at dancing and 20% of the number of girls good at dancing are also good in studies. 5% of the total number of girls in the college are good at drawing and 10% of the girls good at drawing are also good in studies. 35% of the total number of girls in the college are good at cooking and 20% of the girls good at cooking are also good in studies; also, 30% of the girls good at cooking are good at dancing but not good in studies. 10% of the total number of girls in the college are good only at singing. 25% of the total number of girls in the college are good at sports and 16% of the number of girls good at sports are also good at studies. Rest of the girls from the college are only good at studies.
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