Page 16 - CT&AI_CLasa_7_Part_1

The longest National Highway is NH 27, which is approximately 3,600 km
long, while the shortest National Highway is NH 66, which is just 6 km long.
Approximately how many NH 66 would equal the length of NH 27?

(a) 500 (b) 600

(c) 700 (d) 800

cbse handbook questions
Tick ( ) the correct option.

1. Sam forms two different 6-digit numbers,
(a) ≤ 6
X and Y, using digits from 0 to 9 (without
repetition within a number). Exactly two digits (b) ≤ 4
are common between X and Y.

• The digit 9 appears in the same position in (c) ≤ 5
both numbers
(d) ≤ 9
• Y ends with 0, has only one even digit, and
its digits are arranged in descending order
3. The following are the clues to the 6-digit
• 6 is present in X, and the number of even password of Nisha’s laptop:
digits on its left is equal to the number of 35 tens
even digits on its right 31 thousands

If X is the largest possible number, what is the 25 ones
difference between X and Y? 423 hundreds
14 ten thousands
(a) 9310
What is Nisha’s password?
(b) 9210
(a) 213625

(c) 8420 (b) 203675

(d) 8310 (c) 212375

2. If each of the rows follows the same theme,
(d) 213675
what will come in place of “?”
4. Two five-digits numbers are formed using
1 8 2 > 1 8 2 ≤ 7
different digits from 0 to 9. Both numbers
3 5 7 < 3 5 7 ≤ 3
have some digits missing, as shown below:
9 6 3 > 9 6 3 ≤ 2
• Number 1: 1 9
5 0 6 < 5 6 0 ? • Number 2: 4 6

14 Computational Thinking-7 (Mathematics)