Sprint豪赌# PhotoGear - 摄影器材
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1 楼
1.WHAT IS THE PROBABILITY THAT A RANDOMLY SELECTED TWO -DIGIT POSITIVE
INTEGER IS A PERFECT SQUARE OR A PERFECT CUBE? EXPRESS YOUR ANSWER AS A
COMMON FRACTION.
2. A FIVE DIGIT NUMBER IS CREATED USING THE DIGITS 1-5 EACH ONCE.WHAT IS THE
PROBABILITY THAT THE NUMBER IS ODD? EXPRESS YOUR ANSWER AS A COMMON
FRACTION.
3.THE DIGITS 2,3, 4, 7 AND 8 ARE EACH USED ONCE TO FORM A FIVE DIGIT NUMBER
. WHAT IS THE PROBABILITY THAT THE TENS DIGIT IS ODD AND THE NUMBER IS
DIVISIBLE BY 4? EXPRESS YOUR ANSWER AS A COMMON FRACTION
4.THE SUM OF THE DIGITS OF A NUMBER IS 9.WHAT IS THE PROBABILITY THAT THE
NUMBER IS PRIME?
本人无力辅导儿子的数学竞赛,请好心人给出解题步骤,衷心感谢了。
INTEGER IS A PERFECT SQUARE OR A PERFECT CUBE? EXPRESS YOUR ANSWER AS A
COMMON FRACTION.
2. A FIVE DIGIT NUMBER IS CREATED USING THE DIGITS 1-5 EACH ONCE.WHAT IS THE
PROBABILITY THAT THE NUMBER IS ODD? EXPRESS YOUR ANSWER AS A COMMON
FRACTION.
3.THE DIGITS 2,3, 4, 7 AND 8 ARE EACH USED ONCE TO FORM A FIVE DIGIT NUMBER
. WHAT IS THE PROBABILITY THAT THE TENS DIGIT IS ODD AND THE NUMBER IS
DIVISIBLE BY 4? EXPRESS YOUR ANSWER AS A COMMON FRACTION
4.THE SUM OF THE DIGITS OF A NUMBER IS 9.WHAT IS THE PROBABILITY THAT THE
NUMBER IS PRIME?
本人无力辅导儿子的数学竞赛,请好心人给出解题步骤,衷心感谢了。