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  • Question
  • If it is possible to form a number with the second, the fifth and the eighth digits of the number 31549786, which is the perfect square of a two - digit even number, which of the following will be the second digit of that even number ?


  • Options
  • A. 1
  • B. 4
  • C. 6
  • D. None of these

  • Correct Answer


  • Explanation

    The 2nd, 5th and 8th digits of the number 31549786 are 1, 9 and 6 respectively.

     

    The perfect square of a two - digit even number, formed using the digits 1, 9 and 6 is 196.

    And,  14 x 14 = 196 

     

    So, the required even number is 14. Clearly, its second digit is 4.

     

    Hence, the answer is (b).


  • More questions

    • 1. 
      In each of the following question, there are two statements labelled as Assertion (A) and Reason (R).
      (A) Autism is a developmental disability.
      (R) Heridity and lower development of brain are the causes of the Autism.

    • Options
    • A. Both (A) and (R) are false.
    • B. Both (A) and (R) are true.
    • C. (A) is true and (R) is false.
    • D. (A) is false and (R) is true.
    • Discuss
    • 2. 
      Statement
      India's economy is depending mainly on forests.
      Conclusion
      I. Trees should be preserved to improve Indian economy
      II. India wants only maintenance of forests to improve economics conditions.

    • Options
    • A. if Conclusion I follows
    • B. if Conclusion II follows
    • C. if either Conclusion I or II follows
    • D. if neither Conclusion I nor II follows
    • Discuss
    • 3. 
      If the word 'TABLECLOTH' is coded as 'XEMRANRIXT', how can 'HOTEL' be coded?

    • Options
    • A. RIXAT
    • B. TIXAR
    • C. TAXIR
    • D. RAXIT
    • Discuss
    • 4. 
      Assertion (A)
      The steam engine was invented by James Watt.
      Reason (R)
      There was a problem of taking out water from flooded mines.

    • Options
    • A. if both A and R are true and R is the correct explanation of A
    • B. if both A and R are true and R is not the correct explanation of A
    • C. if A is true but R is false
    • D. if A is true but R is true
    • Discuss
    • 5. 
      Error :Infallible

    • Options
    • A. Cure : Irreversible
    • B. Flaw : Impeccable
    • C. Emotion : Invulnerable
    • D. Defect : Intolerable
    • Discuss
    • 6. 
      NA

    • Options
    • A. 26
    • B. 34
    • C. 72
    • D. 46
    • Discuss
    • 7. 
      Who is second to the left of G?

    • Options
    • A. A's brother
    • B. G's mother
    • C. D
    • D. B's brother
    • Discuss
    • 8. 
      __c__bd_cbcda__a__db__a

    • Options
    • A. .ababcd
    • B. bdbcba
    • C. .cdbbca
    • D. .daabbc
    • Discuss
    • 9. 
      Statement:
      Some rivers are hills. No hill is taxi. All taxis are buses.
      Conclusions:
      I. Some buses are rivers.
      II. Some taxis are rivers.
      III. No bus is river.

    • Options
    • A. None follows
    • B. Only I follows
    • C. Only III follows
    • D. Only II follows
    • Discuss
    • 10. 
      Who is seated between R and the person from PNB?

    • Options
    • A. The person from Oriental Bank of Commerce
    • B. P
    • C. Q
    • D. The person from Syndicate Bank
    • Discuss


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