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Home ‣ Verbal Reasoning ‣ Mathematical Operations See What Others Are Saying!
  • Question

  • Which sequence of mathematical symbols can replace *in the given equation to balance the equation?
    7 * 7 * 2 * 1 = 12


  • Options
  • A. x - ÷
  • B. + - x
  • C. x - +
  • D. + x -

  • Correct Answer
  • + - x 

    Explanation

    Given, 7 * 7 * 2 * 1 = 12
    Let us check all the options one by one.
    From option (a), putting the signs in given equation, we get
    7 x 7 - 2 ÷ 1 = 12 ? 7 x 7 - 2 = 12
    ? 49 - 2 = 12 ? 47 = 12
    ? LHS ? RHS
    So, option (a) is incorrect.
    From option (b), putting the signs in given equation, we get
    7 + 7 - 2 x 1 = 12 ? 7 + 7 - 2 = 12
    ? 14 - 2 = 12 ? 12 = 12
    Hence, option (b) is correct and there is no need to check remaining options .

    • More questions

    • 1. 
      c _ bba _ cab _ ac _ ab _ ac

    • Options
    • A. abcbc
    • B. acbcb
    • C. babcc
    • D. bcacb
      • Discuss
    • 2. 
      NA

    • Options
    • A. 14th November
    • B. 15th August
    • C. 26th January
    • D. 2nd October
      • Discuss
    • 3. 
      Nebulous : Form

    • Options
    • A. Insincere : Misanthrope
    • B. Benevolent : Excellence
    • C. Insipid : Taste
    • D. Composed : Innocence
      • Discuss
    • 4. 3 : 12 :: 5 :?

    • Options
    • A. 25
    • B. 35
    • C. 30
    • D. 15
      • Discuss
    • 5. 
      Paper : Tree :: Glass :?

    • Options
    • A. Window
    • B. Sand
    • C. Stone
    • D. Mirror
      • Discuss
    • 6. 
      Statement:
      Poverty persists under conditions where human resource is undervalued, and land and other material resources are overvalued.
      Assumptions:
      I. Poverty can be eradicated by enhancing the human resource value.
      II. There should be a balance between the valuation of human and material resources.

    • Options
    • A. if only assumption I is implicit.
    • B. if only assumption II is implicit.
    • C. if either I or II is implicit.
    • D. if neither I nor II is implicit.
      • Discuss
    • 7. 
      'Tall' is related to 'Dwarf' in the same way as 'Kind' is related to

    • Options
    • A. Weak
    • B. Gentle
    • C. Cruel
    • D. Forgive
      • Discuss
    • 8. 
      Truthfulness : Liar : : Loyalty :?

    • Options
    • A. Worker
    • B. Traitor
    • C. Diligent
    • D. Faithful
      • Discuss
    • 9. 
      Statements:
      H * T, T S B, B © R
      Conclusions:
      I. R © H II. B © H III. T % R

    • Options
    • A. Only i is true
    • B. Only I and II are true
    • C. Only I and III are true
    • D. Only II and III are true
      • Discuss
    • 10. 
      _OPQ, N_PQ, NO_Q, NOP_

    • Options
    • A. ONQP
    • B. NOQP
    • C. NOPQ
    • D. PQNO
      • Discuss

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