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What value should come in the place of (?) in the following number series?
80, 75, 85, 80, 90, ?
80 – 5 = 75
75 + 10 = 85
85 – 5 = 80
80 + 10 = 90
90 – 5 = 85
13, 26, ?, 624, 4992, 49920
13 * 2 = 26
26 * 4 = 104
104 * 6 = 624
624 * 8 = 4992
4992 * 10 = 49920
18, 19, 28, 53, ?, 183
18 + 12 = 19
19 + 32 = 28
28 + 52 = 53
53 + 72 = 102
102 + 92 = 183
13, 25, 7, 31, ?, 37
13 + 12 = 25
25 – 18 = 7
7 + 24 = 31
31 – 30 = 1
1 + 36 = 37
52, 42, 62, 32, 72, ?
52 – (10 * 1) = 42
42 + (10 * 2) = 62
62 – (10 * 3) = 32
32 + (10 * 4) = 72
72 – (10 * 5) = 22
What value should come in the place of (?) in the following questions?
√400 + ? = 2 2/3 of 60
=> 20 + ? = 8/3 * 60
=> 140
14/355 * 71/82 * ? = 14
=> 14/(82 * 5) * ? = 14
=> 82 * 5
=> 410
?/3 of √324 = 72/? * 75/4
=> ?/3 * 18 = 72/? * 75/4
=> ? = 18 * 75/?
=> ?2 = 225
=> 15
6250.0 * 6250.25 = ?
=> 1 * 6251/4 = ?
=> 1 * 54/4 = ?
=> 5
20% of 1200 – 5 * 32 = ?2 – 30
=> 240 – 45 = ?2 – 30
=> 195 + 30 = ?2
=> 225 = ?2
Correct (-)
Wrong (-)
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