## Monthly Archive - April 2023brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |

## Find number abc

If 73a62 + 794b9 = bc248b find number abc. Multiple solutions may exist.**6**

## What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.**5**

## Calculate the number 3639

NUMBERMANIA: Calculate the number 3639 using numbers [8, 6, 3, 9, 52, 537] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**1**

### Fish Heads

A customer at Green's Gourmet Grocery marveled at the proprietor's quick wit and intelligence.

"Tell me, Green, what makes you so smart?"

"I wouldn't share my secret with just anyone," Green replies, lowering his voice so the other shoppers won't hear. "But since you're a good and faithful customer, I'll let you in on it. Fish heads. You eat enough of them, you'll be positively brilliant."

"You sell them here?" the customer asks.

"Only $4 apiece," says Green.

The customer buys three. A week later, he's back in the store complaining that the fish heads were disgusting and he isn't any smarter.

"You didn't eat enough, " says Green. The customer goes home with 20 more fish heads. Two weeks later, he's back and this time he's really angry.

"Hey, Green," he says, "You're selling me fish heads for $4 apiece when I can buy the whole fish for $2. You're ripping me off!"

"You see?" says Green. "You're getting smarter already!"

## MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (3, 6, 7, 8, 17, 30, 31, 32, 50, 53, 54, 55, 78) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B*C.**1**

## Find number abc

If ca661 - 544b8 = ac18a find number abc. Multiple solutions may exist.**5**

## What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.**5**

## Calculate the number 2160

NUMBERMANIA: Calculate the number 2160 using numbers [1, 9, 2, 3, 53, 381] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**1**

## Find number abc

If 188a6 + cb3c4 = 8a2cb find number abc. Multiple solutions may exist.**2**

## Which is a winning combination of digits?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.**3**

## Calculate the number 4451

NUMBERMANIA: Calculate the number 4451 using numbers [9, 1, 3, 6, 28, 357] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**1**