RRB NTPC · Question 96
The heights of 240 students of a school is tabulated below:
| Height (Cm) | <100 | <110 | <120 | <130 | <140 | <150 |
|---|---|---|---|---|---|---|
| Number of students | 12 | 30 | 65 | 180 | 218 | 240 |
How many Students are of height <130cms, but > 100cms?
Show answer & explanation
Answer: (B) 168
Explanation
The table is cumulative (number of students below each height). Students below 130 cm = 180 and below 100 cm = 12, so those between 100 and 130 cm = 180 − 12 = 168.