Required Mathematical Intelligence
Chapter 118 Interesting Numbers
Chapter 118 Interesting Numbers
123456789 nine numbers, fill in a number in each bracket to make the formula true (each number cannot be used repeatedly)
first question:
() () () - () = ()
() × () = () ()
The second question:
() () () × () = () () () ()
[答案:第一题:(1)(3) (2)-(7)=(8)
(6) × (9) = (5) (4)
第二题:(1)(7)(3)(8)(4)=(6)(9)(5)(2)
或者:(1)(9)(6)(3)×(4)=(7)(8)(5)(2)]
(End of this chapter)
123456789 nine numbers, fill in a number in each bracket to make the formula true (each number cannot be used repeatedly)
first question:
() () () - () = ()
() × () = () ()
The second question:
() () () × () = () () () ()
[答案:第一题:(1)(3) (2)-(7)=(8)
(6) × (9) = (5) (4)
第二题:(1)(7)(3)(8)(4)=(6)(9)(5)(2)
或者:(1)(9)(6)(3)×(4)=(7)(8)(5)(2)]
(End of this chapter)
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