Question Discussion & Solution

The pattern of the series is

52 + 11 = 63

63 – 13 = 50

50 + 15 = 65

65 – 17 = 48

48 + 19 = 67

10 × 0.5 + 1 = 6

6 × 1 – 1 = 5

5 × 1.5 + 1 = 8.5

8.5 × 2 – 1 = 16

Calculation:

The series follows following pattern:

⇒ 5 + 0 = 5

⇒ 5 + 5 = 10

⇒ 10 + 10 = 20

⇒ 20 + 15 = 35

⇒ 35 + 20 = 55

⇒ 55 + 25 = 80

∴ The missing number is 80

The pattern followed by the series is

234 + 4 = 238

238 + 14 = 252

252 + 24 = 276 

276 + 34 = 310 

310 + 44 = 354 

Considering the above series-

295, 286, 268, 241, 205, ?

The logic of the series can be explained as,

295 – 9 = 286

286 – 18 = 268

268 – 27 = 241

241 – 36 = 205

By observing the pattern, we can write

205 – 45 = 160

⇒ ? = 160

∴ The value of ? is 160.