PREPARATORY QUESTIONS

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NUMBER SEQUENCES

PREPARATORY SET-69

Directions (Qs.1 to 5): There are five 4 - digit numbers as given below. Answer the following questions based on these numbers.

 

6284   7824   2963   4825   9528

 

Question No : 1

For how many 4-digit number sum of product of first two digit and last two digit is a perfect square?

(1) Four

(2) Two

(3) One

(4) Three

(5) None

Question No : 2

Digits within 4-digit number are arranged in ascending order from left to right then, what is product of 2nd digit of second lowest number and 3rd digit of second highest number After the rearrangement?

(1) 24

(2) 42

(3) 28

(4) 35

(5) None of these

Question No : 3

If 1st–4th and 2nd–3rd digit of each 4-digit number are interchanged then what is difference of second lowest to third lowest number after the rearrangement?

(1) 539

(2) 595

(3) 458

(4) 1134

(5) None of these

Question No : 4

If each 4-digit number is divided by its highest digit then how many such 4-digit numbers are possible for which remainder is less than 4?

(1) One

(2) Three

(3) Four

(4) Two

(5) None

Question No : 5

If all the digits in the numbers are added for each of the given numbers. Which of the given numbers will get the highest value?

(1) 4825

(2) 7824

(3) 2963

(4) 9528

(5) 6284