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In this video lesson, you can learn "High School Mathematics A: Probability 15, Probability of Repeated Trials 2" in about 12 minutes. The key to solving the problem is "If you throw 5 times and throw 4 or more times, it will be exactly 4 or exactly 5 times." Please watch the video lesson in the following order: [Points] ⇒ [Example] ⇒ [Practice] ⇒ [Summary].

If there is a unit other than this one that you do not understand, please click on the URL below.

You can watch the video lessons for each unit together.

■If you have any questions about "Mathematics I", click here!

・Mathematics I Numbers and formulas
https://goo.gl/kkMY1W

・Mathematics I Expanding equations
https://goo.gl/qgCjRb

・Mathematics I Factorization and cross-relationships
https://goo.gl/Ae70Kr

・Mathematics I Rational numbers, irrational numbers, square roots
https://goo.gl/VyO7Rv

・Mathematics I Equations and inequalities
https://goo.gl/omHWxP

・Mathematics I Absolute value and equations
https://goo.gl/wv1T4f

・Mathematics I Quadratic equations
https://goo.gl/tyqgHp

・Mathematics I Sets
https://goo.gl/uPzTs3

・Mathematics I Propositions and necessary and sufficient conditions
https://goo.gl/9uT75D

・Mathematics I Graphs of quadratic functions
ht tps://goo.gl/sDgXo1

・Mathematics I Maximum and minimum of quadratic functions
https://goo.gl/fIsO2s

・Mathematics I Application of quadratic functions
https://goo.gl/b4WFAW

・Mathematics I Common points of parabolas and straight lines
https://goo.gl/igr3ek

・Mathematics I Quadratic inequalities
https://goo.gl/21RZov

・Mathematics I Trigonometric ratios
https://goo.gl/q0cers

・Mathematics I Sine theorem and cosine theorem
https://goo.gl/W44zp2

・Mathematics I Application to area and volume
https://goo.gl/UPRHnx

・Mathematics I Data dispersion and correlation
https://goo.gl/4JhqPf

■If you have any questions about "Mathematics A", click here!

・Mathematics A Sets and complements
https://goo.gl/uB9WnZ

・Mathematics A Number of cases (tree diagrams, summation rules, product rules)
https://goo.gl/OS72Rb

・Mathematics A Permutations
https://goo.gl/liNVCE

・Mathematics A Circular permutations and duplicate permutations
https://goo.gl/8EQcDC

・Mathematics A Combinators nCr
https://goo.gl/EVfHms

・Mathematics A: Use of combinations
https://goo.gl/vk57MX

・Mathematics A: Grouping
https://goo.gl/qOYVj4

・Mathematics A: Probability
https://goo.gl/dhyIIV

・Mathematics A: Probability: Summation and complementary events
https://goo.gl/3hQORr

・Mathematics A: Probability: Dice and independent trials
https://goo.gl/Vfi70n

・Mathematics A: Probability: Dice and repeated trials
https://goo.gl/ZCPe iC

・Mathematics A Probability Lottery・Multiplication Theorem
https://goo.gl/UJSHxY

・Mathematics A Properties of Integers
https://goo.gl/of491x

・Mathematics A Prime Factorization
https://goo.gl/7ptLnq

・Mathematics A Multiples and Divisors・Relatively Prime
https://goo.gl/nGkFLS

・Mathematics A Integer Solutions to Equations
https://goo.gl/7C4xXf

・Mathematics A Integer Solutions to Equations Quotient and Remainder of Division
https://goo.gl/BVW8MA

・Mathematics A Euclidean Algorithm and linear indeterminate equations
https://goo.gl/ycG6An

・Mathematics A Fractions and decimals
https://goo.gl/tqQTjF

・Mathematics A N-ary system
https://goo.gl/kt3HVR

・Mathematics A Properties of interior and exterior divisions of lines and parallel lines
https://goo.gl/fqLumM

・Mathematics A Bisectors of angles of triangles
https://goo.gl/RncX40

・Mathematics A Circumcenter, Incenter, and Centroid of a triangle
https://goo.gl/IhYU3e

・Mathematics A Ceva-Menelaus theorem
https://goo.gl/pq6m0Y

・Mathematics A: Theorem of circular angles and inscribed tangents
https://goo.gl/uRoms0

・Mathematics A: Tangents to circles, tangent theorem, square power theore...