A. 20
B. 42
C. 58
D. 72
Explanation:
20 = 42 + 4, 42 = 62 + 6, 58 = 72 + 9, 72 = 82 + 8 and 90 = 92 + 9.
20, 42, 72 and 90 can be expressed in n2 + n form but not 58.
Related Mcqs:
- The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally?
A. 4
B. 5
C. 6
D. 7 - Find the one which does not belong to that group ?
A. 36
B. 49
C. 64
D. 81 - Find the one which does not belong to that group ?
A. 4422
B. 2442
C. 4242
D. 2244 - Find the one which does not belong to that group ?
A. 30
B. 630
C. 10
D. 520 - Find the one which does not belong to that group ?
A. 104
B. 110
C. 108
D. 112
E. 116 - Find the one which does not belong to that group ?
A. KMNL
B. PRSQ
C. VWYZ
D. JLMK
E. WYZX - Find the one which does not belong to that group ?
A. Chameleon
B. Crocodile
C. Turtle
D. Allegator
E. Frog - Find the one which does not belong to that group ?
A. Tiruvanantapuram
B. Hyderabad
C. Calicut
D. Bangalore
E. Bhubaneswar - Find the one which does not belong to that group ?
A. Ganga
B. Hirakud
C. Yamuna
D. Sutlej
E. Krishna - Find the one which does not belong to that group ?
A. Museum
B. Auction
C. Exhibition
D. Botanical park
E. Zoo
